如图电路中，电源的内阻为r，当滑动变阻器的滑处P向上端a滑动过程中，两表的示数变

桑叶与菊花均具有的功效是( )

A．疏散风热

B．清肺润燥

C．清肝明目

D．清热解毒

E．凉血止血

萤火虫夜晚通过发光来招引异性，这是________行为。

任何语言都存在着歧义现象，汉语也不例外。比如在汉语中，“生意”一词就至少可做两种解释。一种是指生机”、“生命的活力”，如雪中红梅、雨后春笋，都可以说是生意盎然的象征。另一种是指“买卖”，亦即商业经营”，如沿街叫卖、炒股放债、长途贩运，也都叫做“生意”。这两种“生意”其“能指”相同，但能指”下边蕴涵着的“所指”却迥然有异。 

文人们历来看重的显然是前一种“生意”。明代学者张岱说，弹琴拨阮，唱曲演戏，描画写字，作文赋诗，凡百项，皆借此一口“生鲜之气”，得此生意者，自致清虚，失此生意者，终成渣秽。清代学者王夫之也认，写作时含情能达，会景生心，体物得神，有了生意，便自有灵通之句。由此看来，要使生活之树常青，生命之藤常绿，就缺少不了这股勃然于体内飘然于体外的生意。 

商人看重的则是后一种“生意”，即以物生物。做生意就像饲养母鸡一样，抛出的是麸糠，获致的是鸡蛋甚至金蛋。对于人类现实存在着的社会生活而言，这两种“生意”，自然都是不可缺少的。但从目前的行情看，后一种“生意”正酿成热门，甚至连“文人下海”也似乎成了一种时髦。这就不免令人有些担心，因为随着“文学艺术商品化”，的吁声越来越高，两种生意就可能渐渐地只剩下一种生意了。从字源学考证，“意”者，“心音”也。生意，生意，生到最后，如果只能生出一堆硬邦邦的金币和实打实的物质来，那么生意还能成其为生意吗？

通观全文，作者写作本文的切入点是（）

A．对“生意”的论述

B．“生意”学

C．谈艺术与经商

D．语言学

The crisis at Japan’s Fukushima Daiichi nuclear energy center caused by the terrible earthquake has raised questions about the future of the nuclear energy industry. Arjun is president of the Institute for Energy and Environmental Research in the United States. He says the disaster in Japan is historic.

This week, the chairman of America’s nuclear agency said there is little chance that harmful radiation(辐射) from Japan could reach the United States. Gregory also said America has a strong program in place to deal with earthquake threats. No new nuclear power centers have been built in the United States since 1979. That was when America’s worst nuclear accident happened at the Three Mile Island center in Pennsylvania. The accident began to turn public opinion against nuclear energy. At present, about twenty percent of electricity in the United States comes from nuclear energy.

German Chancellor Angela Merkel said Germany would close seven nuclear power centers for the time being while energy policy is reconsidered. The European Union is planning to test all centers in its twenty-seven member nations.

Developing nations are less willing to slow down the development of nuclear. China says it will continue with plans to build about twenty-five new nuclear reactors(核反应堆). And India, under a cooperation agreement with the United States, plans to spend billions on new centers in the coming years.

Nuclear reactors supply fourteen percent of global electricity. Nuclear energy is a clean resource, producing no carbon gases. But radioactive waste is a serious problem to be solved. So is the presence of nuclear power centers in earthquake areas like the one near Bushehr, lran.

小题1:We can learn from the text that America ________.

A．experienced a terrible nuclear accident 32 years ago

B．has a strong program to deal with radiation danger

C．depends heavily on nuclear energy to produce electricity

D．will check all the reactors before cooperating with India小题2:According to the text, which country will be most likely to have a similar disaster?

A．German.

B．Iran

C．India.

D．China.小题3:How does the author seem to feel about the future of nuclear energy?

A．Satisfied.

B．Pleased.

C．Worried.

D．Surprised.小题4:The best title of the text is ______.

A．Various Opinions on Japan’s Nuclear Disaster

B．Japan’s Disaster is Likely to Run Out of Control

C．America Shows Great Concern for Japan’s Nuclear Crisis

D．Japan’s Disaster Throws Doubt on Nuclear Energy Industry

当环境决策的对象可以按