中央政府系统中的事务官员采取非委任制的国家是( )。A．英国和英联邦国家 B．法国

甲乙两实心金属块，它们的体积之比为2：1，将它们分别放在调好的天平的左右盘中，天平恰好平衡．甲和乙的质量之比为______；若将甲切去

1

3

，乙切去

3

4

，那么甲和乙剩余部分的密度之比是______．

Cut off from society

You're on your way to school as usual when suddenly an invisible barrier appears out of nowhere, trapping you underneath it and isolating you from the outside world. What do you do?

This is the scary experience the residents of a fictional town called Chester’s Mill are going through in the US TV series Under the Dome. Based on famous US author Stephen King’s 2009 best-selling novel, the show has become “the highest-rated summer show in 21 years” since debuting (首播) on June 24, reported the New York Post.

The series begins with the dome (穹顶) making its alarming appearance. As the earth trembles and birds take off, an enormous, invisible barrier slices down, cutting the town off from the rest of the world.

The residents quickly realize they are trapped, probably for quite some time. Families are separated, emergency services are unreachable and water, food and fuel are strictly limited.

There is no way out or in. But who or what is responsible? Nobody knows. Thus, the residents are at the mercy of unknown forces and their internal conflicts.

While it provides an enjoyable TV thrill ride, the movie’s science fiction is closely linked with reality.

“Not only is it worrying, suspenseful (悬疑的) and full of splendid special effects, but it has big thoughts about environmentalism and the future of the commented The Denver Post planet,”

As King himself explained to The Telegraph: “The dome is a microcosm (微观世界) of life. We all live under the dome. We live on this little blue planet and so far as we know that’s all we’ve got,” he said. “The resources that we’ve got are the resources that we’ve got; they’re limited.”

But the show explores many themes in addition to environmental destruction. It also shows “how quickly the social order we take for granted can disappear when people are isolated and afraid”, said the Los Angeles Times.

It is “a science-fiction social study”, said The Washington Post. “Once the people of Chester’s Mill realize they are indefinitely trapped without means of food supply, outside communication and power, their polite sense of small-town, American civilization begins to fall apart.”

小题1:The underlined word “isolating” in the first paragraph probably means _______.

A．separating

B．protecting

C．discouraging

D．distinguishing小题2:In the TV series Under the Dome, _______.

A．the dome, which appears out of nowhere, doesn’t have huge effects on the residents’ lives

B．it takes a long time for residents to realize they are trapped by the invisible dome

C．because of the dome, the residents in the small town become more united and helpful D．not knowing what has D．happened, the residents feel helpless against unknown forces

小题3:Why is the TV series closely linked with reality according to the article?

A．Because it is suspenseful and uses splendid special effects to reflect modern life.

B．Because it gets us to think about the future of the earth and the importance of environmental protection.

C．Because it attaches great importance to following the social order even in frightening situations.

D．Because the residents in the TV series live almost the same life as ordinary Americans do.

______是社会服务机构基于组织目标和需求，对政府、企业、社会大众或基金会等，发动募集金钱、物资或劳务的行动或过程。

A．投资
B．捐助
C．捐资
D．筹资

可用于治疗支气管哮喘的药物是：（）

A．间羟胺

B．去甲肾上腺素

C．二者都是

D．二者都不是

在下行风路中发火时，应首先密闭旁侧风道，暂时减小火源所在风路的风量，防止风流逆转，需要时再在火源所在风道中建造密闭。