19、Make sure that the exercise you give the children is ________ pupil’s reach.

A. under               B. beyond      C. above        D. within

18、A clear, warm day suddenly grew chill ________ a dark curtain of rolling dust advanced across the plains.

A. until    B. as       C. so       D. since

17、Some companies have introduced flexible working time with less emphasis on pressure ________.

A. than more on efficiency                                      B. and more efficiency

C. and more on efficiency                                        D. than efficiency

16、In Martin Luther King’s time, the money spent in educating a black child was just one fourth of ________ on each white child.

A. that spent                      B. what has been          C. it had been                   D. that was spent

15、William Beebe, one of the first men ________ the depth of the sea in a bathysphere, got interested in oceanography because of one book.

A. exploring                   B. having exploring          C. to be exploring            D. to explore

14、________ the whole passage, so that you will get a general idea of it.

A. Scanning   B. To scan     C. Scan   D. Having scanned

13、—Why on earth didn’t you answer the phone?

—I’m sorry, but the doorbell __________ too.

A. is ringing                      B. was ringing             C. rang                        D. was about to ring

12、—No wonder you caught a cold. You ________ out last night without a coat.

—I know how silly I was.

A. shouldn’t have gone                             B. mustn’t have gone

C. couldn’t have gone                             D. mightn’t have gone

11、Good advertisements may well ________ the consumers’ emotional needs as well as providing information.

A. refer to      B. see to       C. turn to       D. lead to