Some people say love makes the world go around.Others say itis not love; it's money.Since the __1__ truth is that it is energythat makes the world go around. Energy is the currency of theecological system and life becomes possible even when food is__2__ converted into energy, which in turns is used to seekmore food to grow, to reproduce and to survive. In this __3__cycle all life depends. It is fairly well known that wild animalssurvive from year to year by eating as many as __4__ they can during times of plenty, thesummer and fall,storing the excess, usually in the form of fat, and then using these reserves of fatto survive during the hard time __5__ in winter when food is scarce. But it is probably less wellknown that even with their stored fat, wild animals spend less energy to live in winter than insummer. A good case in point is white-tailed deer. Like most wildlife, deer __6__ reproduce,grow,and store fat in the summer and fall when there is plenty of nutritious food available. Aphysically mature female deer in the good condition who __7__ has conceived in November andwas given birth to two fawns __8__ during the end of May and first part of June, must search forfood for the necessary energy not only to meet her body's needs but also to reproduce milk forher fawns. The __9__ best milk production occurs at the same time that new plant growth isavailable. This is good timing, because milk production is an energy consuming process -- itrequires a lot of food. The need can be met unless the region has __10__ ample food resources.
參考答案及解析:
1.Since--however/But.該句子與前面兩個(gè)句子在意義和邏輯上是轉(zhuǎn)折關(guān)系，而since只能引導(dǎo)原因狀語從句或者時(shí)間狀語從句。
2.even--only.用only強(qiáng)調(diào)條件when food is converted intoenergy，表示“只有當(dāng)食物轉(zhuǎn)化為能量時(shí)”，而even沒有這個(gè)意思。
3.In--On .此處實(shí)際上考查的是depend on，為了強(qiáng)調(diào)狀語，把on this cycle放在了句首，正常的順序應(yīng)該是“All life depends on this cycle”。
4.many--much.這里much指代的是不可數(shù)名詞food。
5.time--times/根據(jù)上下文的語境，此處time為“某一時(shí)期的生活狀況，環(huán)境等”的含義，一般用復(fù)數(shù)形式times，再如：We lived through terrible times during the war years。
6.is^--the.這句話是說：一個(gè)很好的例子是白尾鹿。這里是表示特指，所以white-tailed deer前面應(yīng)該有定冠詞the。
7.the--in good condition為一個(gè)習(xí)語，good前面沒有冠詞。再如：The goods arrived in goodcondition。
8.was--句子的主語是懷孕的成年母鹿，與give birth to 是施動(dòng)者與動(dòng)作的關(guān)系，不應(yīng)用被動(dòng)語態(tài)。
9.reproduce--produce.根據(jù)常識(shí)和上下文的內(nèi)容母鹿所需的能量是為了產(chǎn)奶(produce milk)，而不是繁殖奶(reproduce milk)。
10.can^--not.句中用到的是“not…unless…”這一固定結(jié)構(gòu)表示“除非…，才能…”。