練習(xí)

　　1.科學(xué)家認(rèn)為，遺傳賦人以潛能，也決定了將來(lái)發(fā)展的限度。

　　2.基因組指的是同一個(gè)物種內(nèi)基因的總和。

　　3.應(yīng)用轉(zhuǎn)基因技術(shù)生產(chǎn)的食品因?yàn)橹苯痈淖兞松鷳B(tài)環(huán)境，從而產(chǎn)生了這類食品是否安全的問題。

　　4.當(dāng)作用在氣體上的壓力增大時(shí)，氣體的體積就會(huì)縮小。

　　5.我們所說(shuō)的生物多樣性，指的是地球上動(dòng)植物物種、基因和生態(tài)系統(tǒng)的多樣性。

　　6.太陽(yáng)風(fēng)使地球磁場(chǎng)的形狀發(fā)生很大變化，將其向外拉扯成長(zhǎng)尾狀。

　　7.全世界目前有34，000種植物正面臨著滅絕的威脅，每天都有100個(gè)物種滅絕。

　　8.碳水化合物能合成生物化學(xué)過程中所必需的葡萄糖( glucose)和酶(enzyme)。

　　9.每個(gè)入都有與生俱來(lái)的獨(dú)特指紋，而且終生不變。

　　10.生物技術(shù)和遺傳科學(xué)常常被人們指責(zé)為干擾自然界，對(duì)自然規(guī)律缺乏尊重。

　　答案

　　l.Scientists believe that while endowing a person with various potentials, genes also set limits on what he can achieve in the future.

　　2.The genome refers to all the genes within a species.

　　3.Transgenic food, which directly changes the ecological environment, arouses questions on the safety of such food.

　　4.The volume of a gas becomes smaller when the pressure upon it is increased.

　　5.Biodiversity is the word we use to describe the variety of animal and plant species, genes and ecosystems on the planet.

　　6.The solar wind grossly distorts the earth's magnetic field, dragging it out to a long tail.

　　7.Worldwide, 34., 000 plants are currently threatened with extinction and 100 species are becoming extinct every day.

　　8.Carbohydrate can synthesize enzymes in order to obtain the glucose units necessary for essential biochemical processes.

　　9.All humans are born with unique fingerprints, which will remain unchanged for the whole of their lives.

　　10.Very often biotechnology and genetics are the objects of negative criticism as interference in nature, a kind of lack of respect towards its rules.