10 Gambling is lawful in Nevada.
A enjoyable
B irresistible
C legal
D profitable
11 These are the motives for doing it
A reasons
B excuses
C answers
D replies
12 The river widens considerably as it begins to turn west
A extends
B stretches
C broadens
D bends
13 Many economists have given in to the fatal lure of mathematics.
A error
B puzzle
C attraction
D contradiction
14 With immense relief I stopped running.
A no
B little
C scarce
D enormous
15 A great deal has been done to remedy the situation
A maintain
B improve
C preserve
D protect
答案解析
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。
4 D immense和enormous都有“巨大的”意思。It was all enormous disappointment.此事太令人失望了。no是“没有”，little是“几乎没有”， scarce是“不足的”。
5 B remedy：补救。improve：改进。这两个词意思相近。Herbal medicine can be used to improve our health.草药可用于增进我们的健康。maintain：保持。preserve：保护。protect：保护。
6 A tolerate和put up with都有“忍受”的意思。accept是“接受”，take是“取”，receive是“收到”。
7 D irritating和annoying都有“使烦恼的”意思。hateful是“可恨的”，painful是“痛苦的”，stimulating是“刺激的”。
8 B eternal和never?ending都有“永恒的”意思。long是“长的”，boring是“乏味的”I found his talk rather boring.我发现他的报告相当乏味。extensive是“广泛的”。
9 A vague：模糊的；imprecise：不确切的，不明确的。这两个词意思相近。apparent：清楚的。It is apparent that we have made a mistake.显然，我们犯了个错误。clear是“清楚的”， easy是“容易的”。
10 C lawful和legal都有“合法的”意思。enjoyable有“有益的”意思。The movie was enjoyable.该电影很有意思。irresistible是“不可抵挡的”。The music is irresistible这音乐太动听了。profitable：有利可图的。We had a profitable talk. 我们的谈话是有益的。
ll 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。
12 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。
13 C lure：吸引。attraction：吸引。这两个词意思相近。The attraction of this house lies in its simplicity.这所房子的诱人之处在于它的简单。error：错误。puzzle：难题。contradiction：矛盾。
14 D immense和enormous都有“巨大的”意思。It was an enormous disappointment.此事太令人失望了。no是“没有”，little是“几乎没有”，scarce是“不足的”。
15 B remedy：补救。improve：改进。这两个词意思相近。Herbal medicine can be used to improve our health.草药可用于增进我们的健康。maintain：保持。preserve：保护。protect：保护。