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Unit 2 Plant a Plant 課時(shí)滾動(dòng)訓(xùn)練 [Lessons 10—12]　　　　　　　　　　　　　　　　　　 Ⅰ.連詞成句 將所給詞語(yǔ)連成句子，標(biāo)點(diǎn)已給出，詞語(yǔ)不得重復(fù)使用。 1．made, scarf, her, is, of, cotton ________________________________________________________________________? 2．plants, keep, need, water, to, healthy ________________________________________________________________________. 3．draw, plant, please, the, a, picture, of ________________________________________________________________________. 4．plants, what, you, kinds, of, did, grow ________________________________________________________________________? 5．we, keep, should, away, dangerous, children, animals, from ________________________________________________________________________. Ⅱ.完形填空 We know that trees are useful in our everyday life. They __1__ us many things, such as wood, oxygen, rubber, medicines and many other things. They can __2__ tell us a lot about our climate. The following are the reasons. If you __3__a tree, you can see that it has many rings(年輪). Most trees grow one new ring __4__ year. Because of this reason, we know __5__ a tree is. A tree over a hundred years old means that it has more than a hundred __6__. When the climate is dry or very cold, the trees do not grow very much and their rings are usually __7__. 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 __8__ changed suddenly. If we look at the rings on this tree, we can learn __9__ the climate for a hundred years. We can see __10__ our climate is changing today. (　　)1.A. tell　B．a(chǎn)sk　C．give　D．get (　　)2.A. not B．too C．to D．a(chǎn)lso (　　)3.A. cut down B．climb up C．walk past D．look at (　　)4.A. many B．every C．the first D．from (　　)5.A. how big B．how long C．how old D．how much (　　)6.A. trees B．leaves C．people D．rings (　　)7.A. big B．thin C．small D．thick (　　)8.A. climate B．trees C．things D．a(chǎn)nimal (　　)9.A. for B．to C．a(chǎn)bout D．from (　　)10.A. how B．why C．when D．while Ⅲ.閱讀理解 Rafflesia arnoldii(大王花) People discovered this flower in Sumatra(蘇門(mén)答臘) in 1822, and it is considered to be the largest flower in the world. It can grow up to one metre in diametre (直徑), and weigh as much as 25 pounds. 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 a__maximum__of five days. The flower can reach up to 20 feet tall and 16 feet wide, but it smells awful. Dancing plant(跳舞草) Have you ever watched a plant move all by itself? The “dancing plant”， also known as the telegraph plant, actually moves its leaves. It can grow up to 2 metres high.The period(一段時(shí)間) of its movements is from 3 to 5 minutes, and when all of the leaves move at once, it creates a very cool effect. The plant lives in Asia but can also be found in the South Pacific. It is pretty 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. (　　)1.The underlined phrase “a maximum of” means “________” in Chinese. A. 最少　B. 最低　C. 最大　D. 最多 (　　)2.How does Rafflesia arnoldii smell? A. Terrible. B. Fresh. C. Sweet.　 D. Wonderful. (　　)3.How long can the dancing plant move? A. 12 months. B. 9 days. C. 7 to 10 minutes. D. 3 to 5 minutes. (　　)4.Where can we find the dancing plant? A. In the North Pacific. B. In Canada. C. In Asia. D. In America. (　　)5.Which of the following is NOT true? A. The weight of Rafflesia arnoldii can reach 25 pounds. B．When the dancing plant dances, it actually moves its stem. C．People found Rafflesia arnoldii in Sumatra. D．Charles Darwin wrote the book The Power of Movement in Plants.  詳解詳析 Ⅰ.1.Is her scarf made of cotton 2．Plants need water to keep healthy 3．Please draw a picture of the plant 4．What kinds of plants did you grow 5．We should keep children away from dangerous animals Ⅱ.1—5　CDABC　6—10　DBACA Ⅲ.1—5　DADCB