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Of all living creatures on earth, insects are the most plentiful. Some　 36　 are very useful to man, for example, bees,　 37　 we get honey and wax, and silkworms, which　 38　 us with silk. Other varieties,　39　, are extremely harmful, and do a great　 40　 of damage, especially to crops. Locusts （蝗蟲） are perhaps the most dangerous of all,　 41　 they will eat almost any green　 42　 , and when millions of them　 43　 on cultivated land（耕地）they soon leave it　 44　. In some countries they are the farmer’s　 45　 enemy. Another nuisance is the common　 46　 , not only because it　 47　 us indoors and out - of- doors, but because it spreads diseases.
　　Scientists have given much time and　 48　 to the study of insects. It needs the most careful and　 49　 observation. Thanks　 50　 their discoveries we now know almost all　51　is to be known about the habits of these hardworking insects, bees and ants, which live in　52　better planned in some ways than our　　53　 . But the most valuable work has been done in trying to give　 54　 to men, animals and crops from the　 55　 which insects cause.
　　36．A. members  B. forms  C. qualities  D. varieties
　　37．A. by which  B. from which  C. of which  D. in which
　　38．A. give  B. produce  C. offer  D. supply
　　39．A. however  B. meanwhile C. therefore  D. what's more
　　40．A. majority  B. number  C. amount  D. quantity
　　41．A. and  B. for  C. if  D. when
　　42．A. grass  B. field  C. fruit  D. plant
　　43．A. settle  B. attack  C. pass  D. cross
　　44．A. bare  B. nothing  C. empty  D. untouched
　　45．A. hardest  B. greatest  C. serious  D. wildest
　　46．A. insect  B. creature  C. fly  D. enemy
　　47．A. dislikes  B. bites  C. worries  D. hates
　　48．A. understanding  B. ideas  C. comprehension  D. thought
　　49．A. serious  B. patient  C. curious  D. long
　　50．A. for  B. of  C. to  D. with
　　51．A. that  B. which  C. there  D. what
　　52．A. societies  B. crowds C. teams  D. organizations
　　53．A. world  B. nation  C. selves  D. own
　　54．A. help  B. protection  C. living  D. defense
　　55．A. injury  B. wound  C. sickness  D. ruin
36-40 DBDAC 41-45 BDAAB 46-50 CCDBC 51-55 CADBA
36．D　下文（第39空處）提到other varieties are harmful，因此選D，有些種類的昆蟲。
　　37．B　we get honey from bees，“從蜜蜂身上得到蜂蜜”。
　　38．D　provide/supply sb．with sth．表示“給某人提供/供應”，用C則就該是offer sb．sth.
　　39．A　在此表示上下文的轉折關系，“但另一些種類有害”。
　　40．C　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”。
　　41．B　引導狀語從句表原因，具體加以解釋說明。
　　42．D　plant概括性最強，包括grass等各種植物。
　　43．A　settle用作不及物動詞時，表示“停息、停留；安居，定居”等詞義。
　　44．A　蝗蟲飛過，耕地光禿禿的，植物都被吃了（當然有時可能留下光禿禿的枝干）。
　　45．B　農民最大的敵人。
　　46．C　下文提到在屋里屋外都有，還傳播疾病，因此選C。
　　47．C　蒼蠅在屋里屋外飛，困擾我們。
　　48．D　花時間，想辦法研究昆蟲。give much thought to表示“關心，想到”。
　　49．B　觀察昆蟲需要耐心，上文提到give much time to，因此此處也可說long-time observations．
　　50．C　thanks to表示“幸虧/多虧有了”。
　　51．C　本小題是all（that）there is to be done句式為there's sth to be done（有事需要做）的結構變化形式。
　　52．A　既然與“我們的”相比較，其共同之處是society，人類社會和動物“群棲，群集”。
　　53．D　our own（society），“我們自己的社會形態(tài)”。
　　54．B　與下文的from相呼應，give sb．protection from，“給……以保護”。
　　55．A　昆蟲給我們造成的傷害，此空從第39、40空所在句子的harmful，damage等詞可推知選A。
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A．the Baima has the longest history among all the minority groups in China
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D．Villagers stopped selling things to tourists.
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