Question

13．詞匯應(yīng)用
Space vegetables are grown from seeds （種子）that have been taken to space．When they （1）are brought（bring ）back to the earth．These seeds produce vegetables that are bigger and （2）healthier（healthy） than normal （正常的）vegetables．But some people worry about （3）having（have） space vegetables．They think that space vegetables might not be good for us and could make us（4）get（get ）sick because of the radiation in space．However，people should not be afraid because space vegetables are very healthy．Here are some facts that you should know about space vegetables．
Space vegetables are grown from seeds that are （5）carefully（care） chosen．When seeds are brought back from space，they are tested to make sure that they will be safe （6）to eat（eat）．
Space vegetables are （7）better（good） for you than normal vegetables．For example，space（8）tomatoes（tomato）stay fresh for twenty days，which is one week longer than normal tomatoes．
After genetically modified （轉(zhuǎn)基因）food （9）appeared（appear）in the market，people worried that they were eating （10）unknown（know ） things．For example，if nut genes （堅(jiān)果基因） are put inside potatoes，people allergic （過敏的） to nuts might get sick from eating these potatoes because they do not know they are also eating nuts．Unlike genetically modified food，nobody （11）has done（do ）anything with the genes of space vegetables until now．This （12）means（mean） that no new genes are put into them．So there is no risk of eating something unknown．

Answer 1

分析 文章介紹了太空蔬菜的種植過程，它比正常的蔬菜更健康，但一些人還是擔(dān)心吃了會對他們不好．文章最后一段說明了吃太空蔬菜并沒有什么危險(xiǎn)，讓人們不要擔(dān)心．

解答 1．were brought 考查被動語態(tài)．bring與they（指的是space vegetables）間是動賓關(guān)系，當(dāng)they作主語時(shí)要用被動語態(tài)，結(jié)構(gòu)為be動詞加過去分詞．此處的they是第三人稱復(fù)數(shù)，且時(shí)態(tài)是一般現(xiàn)在時(shí)，be動詞要用are，再加上bring的過去分詞即可．
2．healthier 考查形容詞的比較級．由than可知此處要用比較級，healthy的比較級是healthier．
3．having 考查固定搭配．a(chǎn)bout是介詞，它后面的動詞要用動名詞形式，所以填have的動名詞形式即可．
4．get 考查固定搭配．make sb do…表示使某人做…，此處表示可以使我們生病，填get的原形即可．
5．carefully 考查副詞．分析句子可知此處修飾動詞chosen，修飾動詞要用副詞，且句意為太空蔬菜是由仔細(xì)挑選的種子長大的，用carefully表示仔細(xì)地．
6．to eat 考查固定搭配．be safe to do表示做…安全，此處表示吃起來安全，填eat的不定式形式．
7．better 考查形容詞的比較級．由than可知此處要用比較級，good的比較級是better．
8．tomatoes 考查名詞．空格處作主語，且tomato是可數(shù)名詞，謂語動詞stay用的原形，由此可知主語要用復(fù)數(shù)形式，填tomato的復(fù)數(shù)．
9．a(chǎn)ppeared 考查時(shí)態(tài)．由worried可知時(shí)態(tài)是一般過去時(shí)，所以此處的謂語動詞要填appear的過去式．
10．unknown 考查形容詞．由because they do not know they are also eating nuts與So there is no risk of eating something unknown可知此處表示的是人們擔(dān)心他們吃著未知的東西，用形容詞unknown修飾名詞things．
11．has done 考查時(shí)態(tài)．由until now可知時(shí)態(tài)是現(xiàn)在完成時(shí)，主語nobody是不定代詞，所以助動詞have要用三單形式has，再加上do的過去分詞．
12．means 考查主謂一致．由no new genes are put into them可知時(shí)態(tài)是一般現(xiàn)在時(shí)，主語this是單數(shù)指示代詞，謂語動詞要用三單形式，填mean的三單形式．

點(diǎn)評 考查平日語法知識的積累，注意人稱時(shí)態(tài)和名詞的數(shù)的變化，并結(jié)合語境來用所給詞的正確形式填空，注意上下文間的邏輯關(guān)系是解題關(guān)鍵．