1.I want to provide my boys with a decent education.
A.special B.private C.general D.good
D[解析]我想给我的孩子们提供良好的教育。decent：相当好的，体面的，正派的;更多的用法有：decent income可观的收入;decent meal像样的饭;decent cloth体面的服装;D.good和它意思相同。A.special：特别的;This is a special occasion.这是一个特殊的场合。B.ptovate：私人的，隐私的;例如：Fans are always curious about the singers private life。歌迷总对歌星的私人生活感兴趣。C.general：普遍的 ;如：the general public普通大众。
例如，The majority of people here are decent people.
A. honest B. rich C. good-looking D. high-ranking 本题选择A
2.Sleep stairs can present a particular hazard to older people.
A.picture B.danger C.evidence D.case
B 【解析]陡峭的楼梯对老年人特别危险。hazard和B.danger意思相同，表示危险的：A.picture：图片，。How do you like his picture? 你喜欢他的吗? C.evidence：证据，迹象;例如：There is no evidence that there will be an earthquake there.没有迹象表明那个地区会发生地震。D.case：情况;如：Is that the case? 是这样的情况吗?
例如，The use of the chemical may present a certain hazard to the laboratory workers. A. protection B. indication C. immunity D. danger 本题选择D
3.Our arrangements were thrown into complete turmoil.
A.doubt B.relief C.failure D.confusion
D[解析]我们的安排被弄得一团糟。turmoil：混乱，骚动;D.confusion：混乱，困惑：例如：The conference ended in confusion.会议在混乱中结束。A.doubt：怀疑，疑惑;例如：I doubt his competence to do the work.我怀疑他是否有能力做那件工作。B.relief：减除，救济;例如：refief fund for the earthquake in Yushu district玉树地区的地震救济金。