[单项选择]It's time ______ about the noise pollution late at night.
A. something will be done
B. everything is done
C. something was done
D. everything will be done

[单项选择]It's time __ about the noise pollution late at night.
A. something will be done
B. everything is done
C. something was done
D. everything will be done

[单项选择]It' s time ______about the noise pollution late at night.
A. something will be done
B. everything is done
C. something was done
D. everything will be done

[单项选择]Some people fear thatair pollution may bring about changes inweather around the world.
A. / ; the
B. the; /
C. an; the
D. the; a

[单项选择]People can do nothing about pollution.

[单项选择]In the late 1950’s, for the first time a computer programming language _____.
A. began using binary numbers
B. was used to implement the Unix operating system
C. was put into the market
D. was used for modeling physical and environmental events

[单项选择]It's the third time you ______ late this week.
A. had arrived
B. arrived
C. have arrived
D. arrive

[单项选择].In the late 1970’s and early 1980’s, the United States developed the reusable space shuttle ________to space cheaper and easier.
A. to make access
B. and making access
C. which made accessible
D. and made accessible.

[单项选择]

The fitness movement that began in the late 1960s and early 1970s centered around aerobic exercise (有氧操). Millions of individuals became engaged in a variety of aerobic activities, and literally thousands of health spas developed around the country to capitalize (获利) on this emerging interest in fitness, particularly aerobic dancing for females. A number of fitness spas existed prior to this aerobic fitness movement, even a national chain with spas in most major cities. However, their focus was not on aerobics, but rather on weight-training programs designed to develop muscular mass, strength, and endurance in their primarily male enthusiasts. These fitness spas did not seem to benefit financially from the aerobic fitness movement to better health, since medical opinion suggested that weight-training programs offered few, ff any, health benefits. In recent years, however, weight training has again become increasingly popular for males and for females. Many current programs focus
A. sports activities
B. places for physical exercise
C. recreation centers
D. athletic training programs

[单项选择]It was the first time that Mary was late. She ______ up in the traffic.
A. could be held
B. can have been held
C. might have been held
D. might be held

[单项选择]The serious economic crisis in the late 1920s and 1930s first brought about by（）
A. bank failures
B. serious unemployment
C. farm foreclosures
D. the stock market crash

[单项选择]In the late 1930's and early 1940's, Jacob Lawrence created many paintings _________ the lives of famous African American activists.
A. Portrayed
B. portrayed them
C. that they portrayed
D. that portrayed

[单项选择]By the late 1970s, many shopping malls had almost developed into small cities themselves.
A. 20世纪70年代以后，很多购物中心都在其内部开发了一些小城。
B. 到20世纪70年代末，很多购物中心都几乎已经发展成为一座座小城。
C. 到20世纪70年代末，很多购物中心都在其内部开发了一些小城。
D. 20世纪70年代末，很多购物中心发展壮大，几乎变成一座座小城。

[单项选择]During a late stage of acquired immunodeficiency syndrome (AIDS), a client demonstrates signs of AIDS-related dementia. The nurse should give the highest priority to which nursing diagnosis
A. Bathing or hygiene self-care deficit.
B. Ineffective cerebral tissue perfusion.
C. Dysfunctional grieving.
D. Risk for injury.