The most important thing about cotton in history is ___part that it played in ____Industrial Revolution.

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

________my dear teacher couldn't understand was ________ fewer and fewer middle school students showed interest in her lessons.

A．What; why　       B．That; what       C．What; because    D．Why; that

It's very important for a student to ________ a good state of mind while taking the college entrance examination.

A．keep out         B．keep on              C．keep up      D．keep off

When the headmaster spoke out his plan，the ________ of the students in the class ________against it.

A．majority; were  B．most; were   C．most; did        D．majority; did

He has ________ housework to do，so he seldom goes to the cinema with his child.

A．a large number of    B．a great many  C．a little   D．a great deal of

Didn't it ever________ to you that one day you would be fired because of your carelessness?

A．dream            B．occur            C．expect          D．happen

—Oh, dear. What happened?

—I ________ on the shiny floor and fell.

A．skipped              B．jumped       C．attacked         D．slipped

The news has _______ all over the country _______ the spaceship succeeded in returning to the earth.

A. inspired; which    B. inspiring; that   C. inspired ; that   D. spread; which

The scientists are able to ________ accurately when the spaceship will reach the moon.

A．accumulate       B．calculate        C．appoint          D．estimate

 George Washington was born in 1732 in a rich family in _______ is now the state of Virginia.

A. which           B. where             C. that          D. what