冀教版八年级下册英语Unit 2学情调研测试卷（含答案）

这是一份冀教版八年级下册英语Unit 2学情调研测试卷（含答案），共19页。
冀教版八年级下册英语Unit 2学情调研测试卷(总分120分,考试时间120分钟)第一部分　听力(共四节,满分30分)第一节　听句子,选择最佳答语(共5题;每题1分,满分5分)1.A.You’re right. 　　　　　B.I don’t think so.C.I’m glad to hear that.2.A.He’s going on vacation.B.Volunteering is his dream.C.He wants to be an engineer.3.A.Six months. 　　　　　B.Dogs.C.At school.4.A.Good idea. 　　　　　B.You’re welcome.C.Have a good time.5.A.Can you help me? 　　　　　B.What can I do for you?C.What’s the matter?第二节　听对话和问题,选择正确答案(共13题;每题1分,满分13分)6.What will the boy give the kids?A. B. C.7.How does Walter help his father?A. B. C.8.Where will the speakers go this Saturday?A.To the children’s hospital.B.To the school of the disabled.C.To the old people’s home.9.What time must Sally come to school this Saturday morning?A.At 7:00. B.At 7:30. C.At 8:00.10.Which club did Tony give money to this Monday?A.The Environment Protection Club.B.The Animal Club.C.The Sports Club.11.How much money did Jack give to the Sports Club?A.One hundred yuan. 　　　　　B.Forty yuan.C.Twenty yuan.12.What club does Bob join?A.Music club. 　　　　　B.Volunteers’ club.C.Sports club.13.When will Bob do the volunteer work?A.On Friday. 　　　　　B.On Saturday.C.On Sunday.14.What will Bob’s brother probably do for volunteer work?A.Clean the city streets.B.Give out food at the food bank.C.Cheer up the children in the hospital.15.John takes some exercise every day,doesn’t he?A.No,he doesn’t.B.Yes,he does.C.We don’t know.16.What do we know about John?A.He never eats lunch at noon.B.He is fatter than before.C.He has been abroad for a long time.17.How long does John work every day?A.For five hours. 　　　　　B.For eight hours.C.For long hours.18.What does the woman suggest in the end?A.Eating less food. 　　　　　B.Watching TV.C.Going for a walk.第三节　听短文和问题,选择正确答案(共7题;每题1分,满分7分)19.Where did Miss Yang work?A.In a school. 　　　　　B.In a restaurant.C.In a hospital.20.What did Miss Yang work as?A.A doctor. 　　　　　B.A volunteer.C.A teacher.21.How did Miss Yang feel when she worked?A.Sad. B.Happy. C.Worried.22.Why does the school offer many interesting activities?A.To help the students keep healthy.B.To keep the students from feeling bored.C.To help kids learn English.23.What activities does the writer like best?A.The sports meeting.B.The English Corner.C.Going to the Old’s House.24.Who does the writer go to the Old’s House with?A.Her headteacher. 　　　　　B.Her friends.C.Her classmates.25.What does the writer go to the Old’s House to do?A.To wash clothes. 　　　　　B.To sing.C.To cheer the old up.第四节　听短文填空(共5题;每题1分,满分5分)Information SheetMaybe they lost their 26.　　　　　　　 during the earthquake. The speaker will work as a 27.　　　　　 to help those friends. The speaker asks those friends to forget those 28.　　　　. The friends should study hard and try their best to 29.　　　　　. The speaker asks the friends to 30.　　　　　 their life. 第二部分　语言运用(共两节,满分25分)第一节　完形填空(共10题;每题1分,满分10分)　　阅读下面短文,从每题所给的A、B、C、D四个选项中选出最佳选项。 　　We know that trees are useful in our everyday lives,and they 　31　 us many things,such as wood,oxygen,rubber,medicines and many other things.They can 　32　 tell us a lot about our climate (气候).The following are the reasons. If you 　33　 a tree,you can see that it has many rings.Most trees grow one new ring 　34　 year.Because of this reason,we know 　35　 a tree is.A tree over a hundred years old means that it has more than a hundred 　36　.When the climate is dry and cold,the trees do not grow well and their rings are usually 　37　.When it is wet and warm,the rings are much thicker.If the rings are suddenly very thin or suddenly very thick,this means that the 　38　 changes suddenly.If we look at the rings on the tree,we can 　39　 about the climate for a hundred years.We can see 　40　 our climate is changing today. 31.A.tell B.ask C.give D.want32.A.too B.to C.also D.yet33.A.cut down B.climb up C.look at D.look for34.A.every B.many C.few D.some35.A.how big B.how long C.how old D.how small36.A.trees B.leaves C.rings D.plants37.A.big B.small C.thin D.large38.A.climate B.wood C.oxygen D.weather39.A.teach B.learn C.study D.do40.A.what B.why C.when D.how第二节　短文填空(共15题;每题1分,满分15分)　　阅读下面短文,在空白处填入一个适当的单词或用括号内单词的正确形式填空。　　Do you believe a rose plant says“I want some water”or a tree shouts“My arms hurt”?Maybe you 41.　　　　 (say) this could only happen in some 42.　　　　 (story). 43.　　　　 fact,plants are not always silent.A recent study has found that plants can express when they are in need of water or having their stems cut.They 44.　　　　 (do) this by shouting.“Even in a quiet field,there 45.　　　　 (be) actually some sounds that carry information.However,the pitch (音高) is too high for people to hear,”said Lilach Hadany,the 46.　　　　 (lead) of a team. The researchers used microphones 47.　　　　 (record) some tomato plants and found that stressed plants send out 48.　　　　 (many) sounds than unstressed plants.“When tomatoes are not stressed 49.　　　　 all,they are very quiet,”Professor Hadany said.They also trained a machine in 50.　　　　 (tell) the differences between thirsty plants and cut plants.51.　　　　 result shows that when the causes of stress change,they shout 52.　　　　 (different).After the team recorded many kinds of other plants,they found that many plants like corn,wheat 53.　　　　 grape plants send out sounds when they are under stress,too. Sound recordings of plants are 54.　　　　 (value).They could bring 55.　　　　 (human) lots of advantages,especially in farming. 第三部分　阅读(共两节,满分40分)第一节　阅读理解(共15题;每题2分,满分30分)　　阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项。A56.What does the underlined word “me” refer to?A.The potato flower. B.The potato plant.C.The soil. D.The potato.57.How deep do we plant potatoes in the ground?A.20 cm. B.2 hours.C.20 m. D.2 or 3 weeks.58.When can we dig up the potato plant?A.When the soil is wet.B.When the temperature is between 15 ℃ and 20 ℃.C.When the flowers die.D.When you see the flowers.B　　Do you love sunflowers?This article will walk you through how to plant your sunflower seeds and care for them.Start it with the best temperatures:18~33℃.Part 1　Germinating (使发芽) Sunflower Seeds1.Choose one kind you like.2.Put the seeds in a plastic bag.Cover the seeds with wet paper towels.Put them in plastic bags.Once the seeds germinate,plant them.Part 2 　▲　 1.Choose a sunny place.Sunflowers grow best with six to eight hours of sunlight a day.2.Plant the seeds in holes.Plant seeds 2.5 cm deep and 15 cm apart.Cover the seeds with soil after planting.Part 3　Caring for Sunflower Plants1.Water plants weekly.Water plants once a week.2.Harvest the seeds.Sunflowers usually take 80 to 120 days to mature (成熟) and produce new seeds.Tips:◆Protect the young plants from pests (害虫).Cover the ground with nets.◆Support plants over 90 cm with sticks.59.(新考法 词句还原题)Which of the following can you put in“　▲　”? A.Planting Sunflower SeedsB.Choosing Good SeedsC.Watering Sunflower PlantsD.Checking the Temperature60.If you plant your seeds in April,you may harvest in 　▲　. A.January B.MayC.July D.November61.Where is the article probably from?A.A noticeboard.B.A travel guide.C.A planting diary.D.A gardening magazine.C(2024沧州南皮期中)　　There are many kinds of plants in the world.Now I’ll tell you two kinds of them.They are very special and they are quite different from other plants.62.What can we know about Rafflesia arnoldii?A.It is about 20 metres wide.B.People discovered it in 1922.C.Its flower lasts for 9 to 21 months.D.It is the largest flower in the world.63.How does Rafflesia arnoldii smell?A.Wonderful. B.Terrible.C.Sweet. D.Fresh.64.Where can we find dancing plants?A.In Sumatra. B.In the North Pacific.C.In Asia. D.In Europe.65.In which part of a magazine can we find this text?A.Amazing Nature. B.Exciting Sports.C.Colourful Cultures. D.Interesting Places.D(2024遂宁改编)　　①Plants have roots,leaves,and flowers.They have seeds ,too.New plants grow from seeds.Some seeds fall on the ground.New plants grow next to the old plants.When plants grow this way,they are too crowded to get enough sunshine and water.So some of them die.But some plants spread their seeds even far from where they live.These seeds grow in new places.There are many ways of the seeds’ travel.　　②The wind helps seeds to travel.Some plant seeds have little wings.When the wind blows,the seeds fly away.Soon they fall to the ground and new plants may grow there.Some plants dry up.The wind pulls them from the ground,but they are so big that they can’t fly.They roll along the ground,dropping off their seeds.　　③Other plants grow near the water.Their seeds drop into the water and go away with it.They may travel many miles before they stop.　　④Some seeds have special parts called “stickers”.The stickers help the seeds travel far.How?These seeds wait for an animal to walk by.Then they stick into its fur to get a free ride.Sometimes it’s a long trip.Birds carry some plant seeds to new places,too.　　⑤Seeds can’t walk.They can’t run.But they can travel with the help of wind,water and animals.66.What will happen if new plants are crowded?A.Some of them will travel.B.Some of them will die.C.Some of them can grow taller.D.Some of them can live better.67.What does the underlined word “stick” mean?A.Write. B.Turn. C.Glue. D.Fly.68.What can help the seeds to travel according to the text?A.Leaves,roots and flowers.B.Birds,stickers and wings.C.Wind,water and other plants.D.Animals,water and wind.69.Which can be the best title for the passage?A.The Growth of the PlantsB.The Kinds of the SeedsC.The Parts of the PlantsD.The Travel of the Seeds70.What’s the structure of the passage? A B C D第二节　(2024保定期末)阅读表达(共5题;每题2分,满分10分)　　阅读下面短文,简略回答问题。　　Would you like to grow chilies(辣椒) in your garden?They need a warm climate.If you plant the seeds outside and the weather is cold,place a glass over them.That will protect them from wind and cold and let them enjoy enough sunshine.You can also start the seeds in your home or a greenhouse.　　If you plant chilies inside,fill an 8 cm pot with soil.The pot should have holes at the bottom so water can run out.Drop some seeds in the pot and cover with some soil.Then cover the top of the pot with a see-through plastic(塑料的) bag.If the chilies start growing,take off the bag.If the plants are about 2 cm high,place each one in its own 8 cm pot.If you can see the roots from the bottom of the pot,transplant(移栽) each plant into a 12 cm pot.If the first flowers show,give the plants some fertilizer(肥料).When the weather is warm,put them into big pots and place them outside.71.What can a glass help the seeds do?   72.Why does the bottom of the pot need holes?  73.What should we do when the plants grow to 2 cm high?  74.What should we do when we see the roots from the bottom of the pot?  75.Do you want to grow chilies in your garden?Why or why not?  第四部分　情景交际(满分10分)补全对话(共5题;每题2分,满分10分)　　根据下面的对话情景,在空白处填入一个适当的句子,使对话的意思连贯、完整。A:Morning,Nick.What are you going to do tomorrow?B:I have no plans yet.76.　　　　　　　　 A:I will go to Beishan Park to plant trees.B:77.　　　　　　　　　It’s good for our city environment. A:Yes.The more trees,the fresher the air will be.B:Yeah!78.　　　　　　　　 A:My teacher Ms.Jones and my classmates.79.　　　　　　　　 B:Sure,I’d love to.80.　　　　　　　　 A:In our classroom.You must get there before eight.B:OK,see you then.第五部分　写作(满分15分)书面表达81.同学们,大家都知道植物对我们人类、动物以及周围环境都非常重要。假定你叫李华,请你根据以下思维导图的提示,以“The Importance of Plants”为题,从三个方面谈论一下植物的重要性,呼吁大家要爱护花草树木。　　要求:1.参考提示内容,可适当发挥;2.语句通顺,意思连贯,书写工整;3.文中不得出现你的任何真实信息;4.词数80左右(开头已给出,不计入总词数)。The Importance of Plants　　We all know,plants are very important for our humans,animals and the environment where we live.Now,let me introduce the importance of plants to you.            【听力材料】第一节　听句子,选择最佳答语　　下面你将听到五个句子,每个句子读两遍。请你听完句子的第二遍朗读后,从每题所给出的A、B、C三个选项中,选出该句的最佳答语。No.1.Everyone is going to be old one day.No.2.What does Alan say about volunteer-ing?No.3.What animals can we train to help people?No.4.Let’s learn more about how to care for animals.No.5.What can you say if you want to offer help?第二节　听对话和问题,选择正确答案　　下面你将听到六组对话和十三个问题,每组对话和问题读两遍。请你听完对话和问题的第二遍朗读后,根据所听内容,从每题所给出的A、B、C三个选项中,选出正确答案。　　请听第一组对话,回答第6题。W:I’d like to join the school volunteer project.I will clean up the zoo.What about you?M:I’d like to fix up bikes and give them away to kids who need them.Question No.6.What will the boy give the kids?　　请听第二组对话,回答第7题。W:What do you do to help with the housework,Walter?M:I sometimes go shopping with Mom.Also I always wash Dad’s car.Question No.7.How does Walter help his father?　　请听第三组对话,回答第8、9题。W:Mr.Lee,will we volunteer in the children’s hospital again this Saturday?M:No,Sally.This time,we’ll go to the old people’s home.W:Oh! That’s great! When will we start?M:Please come to school at 7:30 in the morning.W:OK.Where is the old people’s home?M:It’s near our school.The whole class will go there together.Question No.8.Where will the speakers go this Saturday?Question No.9.What time must Sally come to school this Saturday morning?　　请听第四组对话,回答第10、11题。W:Hi,Tony.How often do you get pocket money from your parents?M:Usually once a week.W:Then how much do you usually get?M:About one hundred yuan.Why?W:You know,our Animal Club plans to buy some food for the homeless animals.Would you like to give some money?M:I’d love to.But I just gave twenty yuan to the Environment Protection Club this Monday.And I don’t have much money now.W:That’s OK.I will ask someone else.M:Why not ask Jack? He usually has much pocket money.Last month he gave forty yuan to the Sports Club.W:That’s a good idea.Question No.10.Which club did Tony give money to this Monday?Question No.11.How much money did Jack give to the Sports Club?　　请听第五组对话,回答第12~14题。W:Welcome to join volunteers’ club,Bob!M:Thank you.I’d like to do some volunteer work this weekend,but I don’t like to work outside.W:OK.You could give out food at the food bank on Saturday or go to cheer up the sick children in the hospital on Sunday.M:Oh,I’m good with children.I will go to the hospital.Err...my brother wants to be a volunteer,too.And he likes to work outside.W:Why doesn’t he go to clean the city streets on Friday afternoon?M:That sounds good.Question No.12.What club does Bob join?Question No.13.When will Bob do the volunteer work?Question No.14.What will Bob’s brother probably do for volunteer work?　　请听第六组对话,回答第15~18题。W:Hi,John.I haven’t seen you for a long time.Haven’t you been abroad?M:No,I haven’t.I’ve been working in my company.W:I think you’re fatter than before.M:That’s right.I’m too busy to take any exercise.W:That’s just an excuse.You can always find some time to exercise.M:But I work hard all day for long hours.I often have no time for lunch.W:I think not eating meals can’t help you lose weight.Instead,you will eat more in the evening.M:I know you’re right,but what can I do?W:How about going for a walk instead of watching TV on the sofa every evening?M:But that’s too boring.W:Why not take an MP4 with you? You can enjoy the music and get healthy at the same time.M:That’s a good idea.Question No.15.John takes some exercise every day,doesn’t he?Question No.16.What do we know about John?Question No.17.How long does John work every day?Question No.18.What does the woman suggest in the end?第三节　听短文和问题,选择正确答案　　下面你将听到两篇短文和七个问题,每篇短文和问题读两遍。请你听完短文和问题的第二遍朗读后,根据所听内容,从每题所给出的A、B、C三个选项中,选出正确答案。　　请听第一篇短文,回答第19~21题。　　Miss Yang hasn’t been here for many years.She went to another city.She worked as a volunteer in a hospital.Sometimes she cheered up the sick kids;sometimes she handed out newspapers to patients;sometimes she looked after the old people who had no children.She felt very happy because she felt good when she helped other people.She spent time doing what she loved to do.Question No.19.Where did Miss Yang work?Question No.20.What did Miss Yang work as?Question No.21.How did Miss Yang feel when she worked?　　请听第二篇短文,回答第22~25题。　　Our school manages to offer us many interesting activities to keep us from feeling bored.I like the sports meeting best.I also often go to the English Corner to improve my spoken English.After school,our headteacher often encourages us to do much useful volunteer work.Sometimes on weekends,I go to the Old’s House with my classmates to cheer up the old.We feel very happy.I have many good friends.Usually we study together and help each other.I learn a lot from them.I will never forget my colorful school life.Question No.22.Why does the school offer many interesting activities?Question No.23.What activities does the writer like best?Question No.24.Who does the writer go to the Old’s House with?Question No.25.What does the writer go to the Old’s House to do?第四节　听短文填空　　下面你将听到一篇短文,短文读两遍。请你听完短文的第二遍朗读后,根据短文内容和提示,在信息表中相应的横线上填入所缺信息。My dear friends,　　I’m very sorry to hear that the biggest earthquake happened in your hometown.Maybe you lost many classmates and teachers.Please don’t be afraid.I will work as a volunteer to help you.I think being a volunteer is great! Let’s cheer up.Learn to forget those sad things.Study hard and try your best to make progress.I’m sure that our future will be more beautiful.Enjoy your life,my friends.Yours,Zhang Ling　　听力部分到此结束。【详解答案】1~5 ABBAB　6~10 ACCBA11~15 BBCAA　16~20 BCCCB21~25 BBACC26.classmates and teachers　27.volunteer28.sad things　29.make progress30.enjoy【语篇解读】本文介绍了树木的年轮能告诉我们一些关于气候的信息。31.C　解析:句意:我们知道树木在我们的日常生活中很有用,它们给我们提供很多东西,比如木材、氧气、橡胶、药物和许多其他东西。tell告诉;ask询问;give给;want想要。根据“We know that trees are useful in our everyday lives”可知,树木是非常有用的,因此此处表示它们给我们提供很多东西,give sb. sth.“给某人(提供)某物”。故选C。32.C　解析:句意:它们也可以告诉我们很多关于气候的信息。too太;to向;also也;yet然而。前文提到树木给我们提供很多东西,此处介绍它们另外的用途。位于句中,表示“也”,用副词also。故选C。33.A　解析:句意:如果你砍下一棵树,你可以看见它有很多年轮。cut down砍下;climb up爬上;look at看;look for寻找。根据“you can see that it has many rings”可知,要看到树木的年轮,应把它砍下来。故选A。34.A　解析:句意:大多数树木每年长出一个新的年轮。every每个;many许多;few很少的;some一些。根据“A tree over a hundred years old means that it has more than a hundred…”可知,一棵超过一百年的树意味着它有一百多个年轮。因此树木每年长出一个新的年轮。故选A。35.C　解析:句意:因为这个原因,我们知道一棵树的年龄。how big多大;how long多长时间;how old多大年龄;how small多小。根据“Most trees grow one new ring…year.”可知,树木每年长出一个新的年轮,因此根据年轮可以知道树的年龄。故选C。36.C　解析:句意:一棵超过一百年的树意味着它有一百多个年轮。trees树木;leaves树叶;rings圆圈,年轮;plants植物。根据“Most trees grow one new ring…year.”可知,树木每年长出一个新的年轮,因此超过一百年的树有一百多个年轮。故选C。37.C　解析:句意:当气候干燥和寒冷时,树木不能很好地生长,它们的年轮通常很薄。big大的;small小的;thin瘦的,薄的;large大的。根据“When it is wet and warm,the rings are much thicker.”可知,当天气潮湿和温暖时,年轮要厚得多,因此气候干燥和寒冷时,树木的年轮会很薄。故选C。38.A　解析:句意:如果年轮突然变薄或突然变厚,这意味着气候突然发生了变化。climate气候;wood木头;oxygen氧气;weather天气。根据上文可知,年轮的薄厚对应着气候的变化。故选A。39.B　解析:句意:如果我们看看树上的年轮,我们就能了解一百年来的气候。teach教;learn学习;study学习;do做。根据上文可知,通过观察树的年轮,我们能了解气候的变化。learn about“了解”。故选B。40.D　解析:句意:我们可以看到今天的气候是如何变化的。what什么;why为什么;when何时;how如何。根据句意可知,how符合语境。故选D。41.will say　42.stories　43.In44.do　45.are　46.leader47.to record　48.more　49.at50.telling　51.The　52.differently53.and　54.valuable　55.humansA【语篇解读】本文以第一人称介绍了种植土豆的过程。56.D　解析:代词指代题。根据“I’m Potato.”可知,me指土豆。故选D。57.A　解析:细节理解题。根据“Plant me about 20 cm deep in the ground.”可知,要把土豆种在地里20厘米深的地方。故选A。58.C　解析:细节理解题。根据“When the flowers die,carefully dig up the potato plant.”可知,当花枯萎的时候,我们可以把土豆挖出来。故选C。B【语篇解读】本文讲述了如何种植向日葵种子以及照顾它们的过程。59.A　解析:词句还原题。根据Part 2下的内容可知,Part 2应该是关于种植向日葵种子的。故选A。60.C　解析:细节理解题。根据“Sun-flowers usually take 80 to 120 days to mature (成熟) and produce new seeds.”可知,向日葵通常需要80到120天成熟并结出新种子。如果在四月种植,80到120天后大约是七月。故选C。61.D　解析:文章出处题。文章介绍了如何种植和照顾向日葵,属于园艺类内容。故选D。C【语篇解读】本文介绍了两种特殊的植物——大王花和跳舞草。62.D　解析:细节理解题。根据“People discovered this flower in Sumatra in 1818,and it is considered to be the largest flower in the world.”可知,大王花被认为是世界上最大的花。故选D。63.B　解析:细节理解题。根据“The flower can reach up to 6 metres tall and 4.8 metres wide,but it smells awful.”可知,大王花气味难闻。故选B。64.C　解析:细节理解题。根据“The plant lives in Asia.”可知,我们可以在亚洲发现跳舞草。故选C。65.A　解析:文章出处题。本文介绍了两种特殊的植物,因此本文可能来自杂志的“令人惊叹的大自然”部分。故选A。D【语篇解读】本文主要介绍了种子的传播方式。66.B　解析:细节理解题。根据“When plants grow this way,they are too crowded to get enough sunshine and water.So some of them die.”可知,当植物太拥挤时,它们中的一些会死掉。故选B。67.C　解析:词义猜测题。句意:然后它们会粘到它们的毛皮上搭个便车。Stick意为“粘贴”。Write写;Turn转动;Glue粘贴;Fly飞。Glue与Stick同义。故选C。68.D　解析:细节理解题。根据“Seeds can’t walk.They can’t run.But they can travel with the help of wind,water and animals.”可知,种子可以在风、水和动物的帮助下传播。故选D。69.D　解析:最佳标题题。本文主要介绍了种子的传播方式。D项“种子的旅行”适合做文章标题。故选D。70.C　解析:篇章结构题。根据文章内容可知,第①段引出主题,第②到第④段介绍种子的几种传播方式,第⑤段总结。故选C。71.A glass can protect them from wind and cold and let them enjoy enough sunshine. 72.Because water can run out from the holes.73.We should place each one in its own 8 cm pot.74.We should transplant each plant into a 12 cm pot.75.Yes,I do.Because I like chilies.(答案不唯一,合理即可)76.What/How about you?77.That’s/That sounds good/great/That’s a good idea.78.Who will go/is going with you?79.Would you like to join us?80.Where (and when) shall/will we meet?81.One possible version:The Importance of PlantsWe all know,plants are very important for our humans,animals and the environment where we live.Now,let me introduce the importance of plants to you. 　　In food and medicine,people can eat plants or use them as medicine.Animals eat the fruit from the trees.In shelter,when the weather is sunny and hot,you can sit in the shade under a tree.It’s nice and cool.People use wood from trees to build houses and furniture.Animals can live in the forest.In clothing and school things,clothing is also made from trees and plants.Books,paper,and pencils all come from plants.In environment,plants help make the air clean and fresh.The plants cover the soil and can stop the wind.　　In a word,all of us cannot live without plants.The plants are important.Welcome to our school farm!I’m Potato.Dry me in the sun for 2 hours.Plant me about 20 cm deep in the ground.Use the soil in No.6 box.The best temperature is between 15℃ and 20 ℃.After 2 or 3 weeks,a potato plant will riseout of the ground.The potato plant will flower.When the flowers die,carefully dig up the potato plant.Then you’ll have your own potatoes.Rafflesia arnoldii(大王花)　　People discovered this flower in Sumatra in 1818,and it is considered to be the largest flower in the world.It can grow up to one metre in diameter(直径),and weigh as much as 11 kg.Though Rafflesia arnoldii is a large flower,it is very difficult to find.It takes 9 to 21 months for the plant to develop,but its flower lasts for only five days.The flower can reach up to 6 metres tall and 4.8 metres wide,but it smells awful.Dancing plant　　Have you ever watched a plant move all by itself?The dancing plant actually moves its leaves.It can grow up to 2 metres high.The period(时期) of its movements is from 3 to 5 minutes,and when all of the leaves move,it brings a very cool wind.The plant lives in Asia.People can also find it in the South Pacific.It is very wonderful.This plant is famous for being a favourite of Charles Darwin,and it is important in his book The Power of Movement in Plants.