英语

　　1.In the west of China, people plant row of trees to prevent the wind ( ) the earth away.

　　A. blowing

　　B. to blow

　　C. blows

　　D. blew

　　【答案】A。prevent sth. from doing 指的是防止什么事情发生，在文段中把from省略，就只能选blowing。B是不定式，C是动词单三形式，D项是过去式，因此答案选A项。

　　2.The demand ( ) will cause an incredible expansion of country.

　　A. for housing

　　B. to be housed

　　C. for being housed

　　D. to house

　　【答案】A。demand for doing sth. 因此是for housing。B项指的是不定式的被动语态。C项是被动语态。D项就是不定式，因此BCD从语法上说都不合适，因此答案选A项。

　　3.( ), this simple gesture means five different things in five different Mediterranean countries.

　　A. Because it seems astonishing that

　　B. Astonishing though it may seem

　　C. You will be astonished by

　　D. Astonished is what it was

　　【答案】B。这里让步状语从句，though it may seem astonishing，把astonishing放在前面就是B项。A项式原因状语从句，因此不符，排除。C项不是从句故排除。D项是过去分词，表被动，但不符句子，排除。因此答案选B项。