has been devoted to"是定语从句，修饰先行词即句子的主语"The new method"。

5．His mother doesn't ________of her going to study in the United States alone.

A．adjust B．agree

C．prove D．approve

答案　D

解析　approve of (doing) sth.赞成(做)某事。agree 不能跟 of 搭配；adjust调节；prove证明，均与句意不符。

6．The disease prevents the blood ________freely.

A．to circulate B．circulating

C．to be circulated D．circulated

答案　B

解析　prevent sb. from doing sth.阻止某人做某事，在主动语态中介词from可以省略。

7．Nowadays，there is a________ increase in children's creativity，for they are greatly encouraged to develop their talents.

A．sharp B．slight

C．natural D．modest

答案　A

解析　句意为：现如今，孩子的创造力急剧提高，因为他们被鼓励去发展个人才能。sharp急剧的，符合句意。slight轻微的；natural自然的；modest谦虚的。

8．The teacher told us that she would ________ the theory and play us some classical music before the next test.

A．try on B．try for

C．try out D．turn out

答案　C

解析　句意为：老师告诉我们她会尝试一下这个理论，在下次考试前为我们播放一些古典音乐。try out试验，符合句意。try on试穿；try for谋求，争取；turn out结果是。

9．Each child is unique and teachers should encourage each one to realize their________.

A．power B．strength

C．necessity D．potential

答案　D