Although many people view conflict as bad, conflict is sometimes useful ___________ it forces people to test the relative merits of their attitudes and behaviors.

  A. by which         B. to which           C. in that                    D. so that

Between 1974 and 1997, the number of overseas visitors expanded _________27%.

  A. by              B. for               C. to                         D. in

Corn originated in the New World and thus was not known in Europe until Columbus found it _______ in Cuba.

A. being cultivated    B. been cultivated      C. having cultivated D. cultivating

This kind of glasses manufactured by experienced craftsmen _________ comfortably.

  A. is worn           B. wears           C. wearing                    D. are worn

She ought to stop work; she has a headache because she ___________ too long.

A. has been reading     B. had read         C. is reading                  D. read

Although Anne is happy with her success ,she wonders ________will happen to her private life.

A. that               B. what             C. it                    D. this

_____ beauty of _____ picture does not depend only on its subject but on its style.

 A. The, a                    B. /, the                      C. The,The                   D. /, a

一般说来，你越了解一个国家的历史和文化，你就越对这个国家怀有敬意。（more）

毋庸置疑，她将会被选为2010年世博会志愿者，因为她有很强的沟通能力。（choose）

人人都愿意和乐于助人、有幽默感的人交朋友。（who）