【答案】

　　1.A) critical, 批判的、批評的. D不能搭配題干中的attitude towards foreign students, 又因本文立場明確, 故B也不對. A是完全不對.

　　2.D) prejudiced, 有成見的. 出現地點：There has been a lot of unfair and biased criticism of families who welcome foreign students into their homes. 通過unfair and可推斷出biased也為反面意思, 只有D是反面意思. 這幾個詞可以記一記.

　　3.B) A host family usually has no alternative but to accept the student assigned對應原文第三段第一句The problem is that the host family cannot inspect students or refuse to accept the ones who look dirty, unreliable or noisy. 第二段和第三段亦剛好可以用來解釋ACD為什么是錯的。。。

　　4.標準答案為B) foreign students come to stay with their host families to learn English, 怕是又錯了。。。偶覺得該選C)a hostess does not make much profit because she has to buy new furniture. 首先A和D都是明顯錯的, B中的learn English只是最后一句有所提及, It’s time foreign students were taught to be polite and to behave properly, as well as how to speak English, 但這個learn English和stay with their host families的關系并非B所講的那樣. C對應原文第四段, 最多是because后面的內容不全面, 但比ABD看起來要好。。。個人意見, 歡迎討論。。。

　　5.C)to complain about the irresponsibility of foreign students, 本文的主旨.