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16．選出劃線部分讀音不同的一項（　　）

A．

know

B．

now

C．

how

分析選出劃線部分讀音不同的一項（　　）A．know[n??]知道．B．now[nau]現(xiàn)在．C．how[hau]怎么．

解答答案：A．考查語音．A．know[n??]知道．B．now[nau]現(xiàn)在．C．how[hau]怎么．A選項發(fā)/??/．B，C選項發(fā)/au/．因此發(fā)音不同的一項是A．

點評考查語音，此題型要掌握音標知識，積累一些字母組合音．還要注意一些固定的發(fā)音規(guī)則．然后結(jié)合語境，完成試題．

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根據(jù)短文內(nèi)容完成表格，每空一詞．
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Business fishing of ocean fish	The number of ocean fish has dropped by 90% in the past fifty years．	The number of fish （77）is becoming．Smaller and smaller．
The size of ocean fish	Big ocean fish have almost been （78）much fewer since the start of business fishing in the 1950s．	The size of ocean fish is not （79）as（so） big as that in the past．
The way of fishing	Long-line fishing can be especially had to （80）catch fish．	Business fishing can destroy fish groups a lot faster than in the past．