新外研版必修1Unit6Period2課時練習(xí)題

1、1Unit6Period2 課時練習(xí)題新外研版必修1Unit6Period2 課時練習(xí)題一、單詞拼寫1.Imagine mountains win silver water,shining in the spring sun.2 .Although the （ 區(qū)域 ）has plenty of rain,the mountains are steep and the earth is （淺的 ）.3 .The flat terraces catch the rainwater and （ 防止 ）the soil from being washed away.4 .But perhaps w

2、hat is most（影響深遠(yuǎn)的 '）isthe way in which people have worked in hnatureto make these terraces and grow rice.5 .The terraces are cleverly d, withhundreds of waterways that connect with each other.6 .Although modern technology could help produce more crops, the rice growers are people for whom （ 傳統(tǒng) ）

3、hold much value.7 .This knowledge is passed down through families, which means that new gcontinue to useancient methods of （ 農(nóng)業(yè) ）to maintain theterraces.8 .Today, the Longji Rice Terraces athousands of visitors who come to （ 欣賞 ）thisgreat wonder created by people and nature workingtogether.9 .Don

4、9;t hyour eyes by reading in thebright sun.10 .She was busy; tshe could not come tothe party.11.China is situated in one of the most active earthquake （ 區(qū)域 ） in the world.12.The （ 傳統(tǒng) ） of the Dragon BoatFestival started more than 2,000 years ago.13.Our school was （ 設(shè)計 ） by a famousprofessor from Ton

5、gji University of Shanghai.二、閱讀理解Plant cloning has been an agricultural technique used by farmers and gardeners for centuries.Grafting（ 嫁接 ）is a common form of plant cloning.Many plants in nature actually clone themselves and reproduce asexually.Cloned plants are much more predictable than normal pl

6、ants, so their yield（產(chǎn)量 ）is morereliable.Cloned plants also reproduce faster, limiting the amount of time between planting and harvesting.It is often cheaper to produce seeds through cloning than through traditional methods.Plants can essentially be optimized so that farmers or individual growers al

7、ways have the best seeds available.With more yield at a faster rate, farms can produce more food for more people while decreasing overall costs.Cloning can be used to wipe out diseases that previously killed off the entire fields of crops.This would make plants immune（ 免疫的 ）to the kinds of diseases

8、that farmers and gardeners around the world fear each year.Crop failures due to disease and virus could become a thing of the past.Also, plants that are near extinction can be brought back to life through cloning.Through cloning scientists candevelop “ super” fruits and vegetables of superior nutrit

9、ional quality.This could make for a healthier population overall.This is already being done through selective pollination（ 授粉 ）, and genetic cloning could take it to the next level.By plant cloning we have a population of identical plants and all these plants equally suffer from the same diseases, b

10、ut in nature the weak would die and the strong would survive.While there are some dangers to consider with plant cloning, there are plenty of benefits that could prove vital to the propagation（繁衍 ）of the human species.1 .The underlined rding to the text, cloned plants ? .A.have lower yield than norm

11、al plants8 .have a short growth cycleC.resist various kinds of diseasesD.need little care from people3.what can we infer from the text?A.The fruits produced by cloned plants taste much better.B.There are more cloned plants than normal plants.C.Plant cloning can disturb the laws of nature.D.People sh

12、ould avoid cating cloned fruits.4.What is the main purpose of the text?A.To warn the negative effects of plant cloning.B.To present different kinds of plant cloning.C.To predict the future of plant cloning.D.To inform us about the advantages of plant cloning.More than 10,000 people were made homeles

13、s in Ternang when the Sungai Mas overflowed its banks yesterday after six days of continuous heavy rain.The e in from public organizations and helpful people.A Disaster Relief Fund（ 救災(zāi)基金）will be startedas soon as possible. ”According to the latest reports it is still raining heavily in Ternang.The whole town is expected to be wholly covered by the water.So far no deaths have been reported.1.Based on the contents, this passage is probably taken from .A.a storybookB.a textbookC.a magazineD.a newspaper2.T