Eating too much fat can______heart disease and cause high blood pressure.

　 A. result from　　　　　　 B. contribute to

　 C. attend to　　　　　　　 D. devote to

There's no bus now, and we can't get home _______ by taxi.

A. rather than　　 B. other than　 C. more than　 D. less than

—May I use your phone?

　 —_______.

A. It doesn’t matter　　　 B. Go ahead　　　　 C. No, I don’t mind　　　 D. No, you needn’t

He______ into the space，and just kept silence

A．stared　 B．watch　 C．observed D．saw

Shortly after the accident, two___________ police were sent to the spot to keep order.

A. dozens of　　 B. dozens　　 C. dozen of　　 D. dozen

Mr. Huang told us to spend as much time as possible _______ our English studies.

A. to improve　　 B. improved　　 C. improving　　　 D. on improving

Popular or social dances often ______ folk dances.

Although I tried my best to convince them _____the importance and urgency of the operation, the doctors were not convinced _______ it immediately.

　　 A. with; to perform　 B. of; doing　 C. on; to do　 D. of; to perform

—Can you work out the problem?　 —I can’t ______your explain how to do it.

A. but for 　 B. except C. apart from D. unless

Corn is delicious________with butter in the eyes of westerners.

A. when eaten B. when to eat C. when to be eaten D. when eating