They are representatives of farm workers and the frustrating conditions they are in are______ the true state of the majority of them.

　 A. symbolic　 B. representative of　 C. curious about　　 D. ambitious about

He is unfit for the job, ________?

A. isn’t he　　　 B. is he　　　　 C. doesn’t he　　　 D. does he

This ring，which my mother left to me, is my most valuable piece of j ________.

There is a mountain　　 the top is always covered with snow．

A．of that　　　 B．of which　　 C．its　　　　 D．that

Einstein developed Theory of Relativity, ________ completely changed the way ________ scientists understand space and time.

A．which; that B．which; which C．that; which D．that; that

We spent many years studying the formation of rocks, experiencing many sufferings and even death. But our hard work _____in the end, and we made it.

A. paid off　 　 B. made up　 C. gave away　 　 D. came out

The reason ____he was late was _____ he had taken a wrong bus.

A. that, why　　　　 B. why, that

C. why, because　　　 D. why, because of

This ____________ girl is Linda's cousin.
A. pretty little Spanish              B. Spanish little pretty
C. Spanish pretty little              D. little pretty Spanish

Jack is ____ honest and hard-working boy and he must be _____ useful man in the future.

A. a; a B. an; an　 C. an; a　 　 D. a; an