呼吸道病毒不包括（） A.流感病毒 B.麻疹病毒 C.柯萨奇病毒 D.腮腺炎病毒 E

补充词语。   

(    )(    )有礼        (    )紫嫣红         操(    )自如   

应接不(    )           (    )人寻味         花团锦(    )

-I wonder how much you charge for your services.

-The first two are free____________ the third costs $ 30.    [ ]

A. while      

B. until          

C. when          

D. before

布达拉宫规定每天参观的人数不超过3000人，其主要原因是（   ）

A．保护宫堡式建筑群

B．控制进藏旅游人数

C．激发旅游者的兴趣

D．尊重喇嘛教的传统

There are countless parents who will not allow their children to play violent video games, in which players are able to kill, maim, dismember or sexually assault human images in depraved ways. The video game industry rates them, and some stores use that rating to decide whether to sell a particular game to a minor.

But California went too far in 2005 when it made it illegal to sell violent video games to minors. Retailers challenged the law, and a federal appeals court rightly ruled that it violates the First Amendment. Last week, the Supreme Court said that it would review that decision. We hope it agrees that the law is unconstitutional. California’s law imposes fines of up to $1,000 on retailers that sell violent video games to anyone under 18. To qualify, a game must, as a whole, lack serious literary, artistic, political or scientific value for minors.

But video games are a form of free expression. Many have elaborate plots and characters, often drawn from fiction or history. The California law is a content-based restriction, something that is presumed invalid under the First Amendment. The Supreme Court has made it clear that minors have First Amendment rights. California has tried to lower the constitutional standard for upholding the law by comparing it to "variable obscenity," a First Amendment principle that allows banning the sale of some sexually explicit materials to minors that cannot be banned for adults. The United States Court of Appeals for the Ninth Circuit, in San Francisco, like other federal courts, rightly refused to extend that doctrine to violent games.

Under traditional First Amendment analysis, content-based speech restrictions can survive only if they are narrowly tailored to promote a compelling government interest. California says its interest is in preventing psychological or neurological damage to young people. The appeals court concluded that the evidence connecting violent video games to this sort of damage is too weak to make restricting the games a compelling government interest.

Even if the interest were legitimate, the state could have used less restrictive methods. The video game industry, like the movie business, has a voluntary rating system that provides buyers and sellers with information on the content of specific games, including age-specific ratings, ranging from "early childhood" to "adults only. " The government could do more to promote the use of voluntary ratings by retailers and parents.

California lawmakers may have been right when they decided that video games in which players kill and maim are not the most socially beneficial form of expression. The Constitution, however, does not require speech to be ideal for it to be protected.

The "decision" in the second paragraph refers to（）

A. the decision reached by retailers

B. the decision about the rating of a game

C. the ruling reached by the federal appeals court

D. the ban imposed on violent games by California’s law

如果发电机驱动的滑油缺乏足够的冷却，通常会导致滑油温度怎样的变化（）？

A、温升下降

B、温升上升

C、温升长时间停留在黄区

D、温升一会大一会小，变化明显