1、 These are the motives for doing it.
A reasons
B excuses
C answers
D replies
2、 The river widens considerably as it begins to turn west
A extends
B stretches
C broadens
D bends
3、 Many economists have given in to the fatal lure of mathematics.
A error
B puzzle
C attraction
D contradiction
【解析】
1、 A motive:动机。reason:理由。这两个词意思比较接近。There is no reason to doubt his word.没有理由不相信他的话。excuse:借口。answer和reply都有"回答"的意思。
2、 C widen和broaden都有"拓宽"的意思。extend:延伸:延长。The builders extended the road for three more miles.筑路人把道路延长了三英里。stretch:延伸。The forests stretch for hundreds of miles森林绵延数百英里。bend:弯曲。
3、 c lure:吸引。attraction:吸引。这两个词意思相近。The attraction of this house lies in its simplicity.J~所房子的诱人之处在于它的简单。error:错误。puzzle:难题。contradiction:矛盾。
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