Of all living creatures on earth, insects are the most plentiful. Some 1 are very useful to man, for example, bees, 2 we get honey and wax, and silkworms, which 3 us with silk. Other varieties, 4 , are extremely harmful, and do a great 5 of damage, especially to crops. Locusts are perhaps the most dangerous of all, 6 they will eat almost any green 7 , and when millions of them 8 on cultivated land they soon leave it 9 . In some countries they are the farmers’ 10 enemy. Another nuisance is the common 11 , not only because it 12 us indoors and out-of-doors, but because it spreads diseases.
　　Scientists have given much time and 13 to the study of insects. It needs the most careful and 14 observation. Thanks 15 their discoveries we now know almost all 16 is to be known about the habits of these hardworking insects, bees and ants, which live in 17 better planned in some ways than our 18 . But the most valuable work has been done in trying to give 19 to men, animals and crops from the 20 which insects cause.
1．A．members            B．forms        C．qualities           D．varieties
2．A．by which            B．from which     C．of which           D．in which
3．A．give                B．produce        C．offer              D．supply
4．A．however             B．meanwhile     C．offer             D．supply
5．A．majority             B．number        C．a(chǎn)mount           D．what’s more
6．A．a(chǎn)nd                 B．for            C．if                D．when
7．A．grass               B．field          C．fruit              D．plant
8．A．settle               B．a(chǎn)ttack         C．pass              D．cross
9．A．bare               B．nothing        C．empty             D．untouched
10．A．hardest            B．greatest        C．serious            D．wildest
11．A．insect              B．creature       C．fly               D．enemy
12．A．dislikes            B．bites          C．worries           D．hates
13．A．understanding       B．ideas           C．comprehension      D．thought
14．A．serious            B．patient        C．curious           D．long
15．A．for                B．of            C．to                D．with
16．A．that               B．which        C．there             D．what
17．A．societies            B．crowds        C．teams             D．organizations
18．A．world              B．nation       C．selves             D．own
19．A．help              B．protection    C．living             D．defense
20．A．injury              B．wound       C．sickness            D．ruin

1--  20      DBDAC   BDAAB   CCDBC   CADBA  

1．答案：D解析：下文提到other varieties are harmful，因此選D項(xiàng)，有些種類(lèi)的昆蟲(chóng)。
2．答案：B解析：we get honey from bees, “從蜜蜂身上得到蜂蜜�！�
3．答案：D解析：provide / supple sB．With sth. 表示“給某人提供/供應(yīng)”，用C項(xiàng)則就該是offer sB．sth.。
4．答案：A 解析：在此表示上下文的轉(zhuǎn)折關(guān)系，“但另一些種類(lèi)有害”。
5．答案：C解析：a great / large amount of + 不可數(shù)名詞，a large / small quaintly of + 可數(shù)/不可數(shù)名詞表示“大量的”。
6．答案： B解析：引導(dǎo)狀語(yǔ)從句表原因，具體加以解釋說(shuō)明。
7．答案：D解析：plant概括性最強(qiáng)，包括grass等各種植物。
8．答案：A解析：settle用作不及物動(dòng)詞時(shí)，表示“停息、停留；安居、定居”等詞義。
9．答案： A解析：蝗蟲(chóng)飛過(guò)，耕地光禿禿的，植物都被吃了（當(dāng)然有時(shí)可能留下光禿禿的枝干）。
10．答案：B解析：此處意為“在有些國(guó)家他們是農(nóng)民最大的敵人”。
11．答案：C解析：下文提到在屋里屋外都有，還傳播疾病，因此選C項(xiàng)。
12．答案：C解析：蒼蠅在屋里屋外飛，因擾我們。
13．答案：D解析：花時(shí)間，想辦法研究昆蟲(chóng)。Give much thought to表示“關(guān)心，想到”。
14．答案：B解析：觀察昆蟲(chóng)需要耐心，上文提到give much time to，因此此處也可說(shuō)long-time observations。
15．答案：C解析：thanks to意為“幸虧，多虧”。
16．答案：C解析：本題是all (that) there is to be done句式為there’s sth. To be done的結(jié)構(gòu)變化形式。
17．答案：A解析：既然與“我們的”相比較，其共同之處是society，人類(lèi)社會(huì)和動(dòng)物“群棲，群集”。
18．答案：D解析：our own (society)，“我們自己的社會(huì)形態(tài)”。
19．答案：B解析：與下文的from相呼應(yīng)，give sB．protection from “給……以保護(hù)”。
20．答案：A解析：昆早給我們?cè)斐傻膫�，此空從�?、5空所在句子的harmful, damage等詞可推知選A項(xiàng)。
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C
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D. working experience outside college counts a lot to one’s future career

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