[单项选择]A research center has been set up in this country.
A. praised
B. established
C. reformed
D. criticized

[单项选择] A research center has been{{U}} set up{{/U}} in this country
A. praised
B. established
C. reformed
D. criticized

[单项选择]A modern city has been set up in______was a wasteland ten years ago.
A. what
B. which
C. that
D. where

[单项选择]_______ center has been set up to give ________ on scientific farming for the nearby farmers.
A. Information; advice
B. An information; advice
C. An information; advices
D. Information; advices

[单项选择]The university has launched a research center to develop new ways of ______ bacteria which have become resistant to drug treatments.
A. regulating
B. halting
C. interrupting
D. combating

[单项选择]How many children's museums have been set up in America in the past 15 years


A. About 100.
B. Less than 80.
C. Over 180.
D. Altogether 215.

[单项选择]The new government has just set up a monopoly in salt.
A. control
B. share
C. grant
D. segment

[单项选择]

Man has been storing up useful knowledge about himself and the universe at the rate which has been spiraling upward for 10,000 years.

　　The (21) took a sharp upward leap with the invention of writing, but even (22) it remained painfully slow for several centuries. The next great leap forward (23) knowledge acquisition did not occur (24) the invention of movable type in the 15th century by Gutenberg and others. (25) to 1500, by the most optimistic (26) Europe was producing books at a rate of 1000 titles per year. This means that it (27) a full century to produce a library of 100,000 titles. By 1950, four and a half (28) later, the rate had accelerated so sharply that Europe was producing 120,000 titles a year. (29) once took a century now took only ten months. By 1960, a (30) decade later, the rate had made another significant jump, (31) a century’s work could be finished in seven
A. As
B. Had
C. If
D. With