流行性脑脊髓膜炎确诊可采取（）与（）涂片革兰染色，亦可取（）与（）做细菌培养。

As NASA prepares to set twin robots loose on the Martian surface and makes plans to send another in 2007, the agency’s long term goal is clear: determine whether the red planet does or ever did harbor life.

But the current search for life is necessarily limited to life as we know it, organisms dependent on liquid water. A SPACE. corn reader recently suggested that "We as humans are arrogant, simply believing that any other form of life will be just like us. "

Researchers devoted to the search for extraterrestrial (ET) have a similar view. "Scientists’ approach to finding life is very Earth-centric," says Kenneth Nealson, a geobiologist at the University of Southern California. "Based on what we know about life on Earth, we set the limits for where we might look on other planets," Nealson said. Within that framework, however, there are extreme cases of life on Earth that suggest the range of places to look on frigid Mars.

Nealson and his colleagues recently found the most extreme sort of organism in a salty liquid lake under the permafrost of Siberia. The organism, named cryopegella, can exist at colder temperatures than any previously discovered. Nealson’s team figures that if the ice at the polar caps of Mars warmed to liquid water, organisms like cryopegella could have awakened and repaired any damage that might have occurred to their various cellular components. That does not mean there are necessarily dormant microbes within the ice caps of Mars. But it does suggest a broader range of potential cradles for life.

Other researchers agree, and a host of so-called "extremophile" discoveries on Earth in recent years indicate the polar regions of Mars might be prime hunting grounds. As on Earth, organisms there might be slathered in natural antifreeze or be able to go dormant for tens of thousands of years, waiting for a brief thaw, their moment in the Sun.

Meanwhile, scientists recognize that there could indeed be life elsewhere in the universe that does not require water. And some astrobiologists are trying to explore the possibilities. But it is a tough problem to approach. In looking for "life as we don’t know it," it’s hard to even imagine what to expect.

Life might or might not exist on Mars. If there are critters there, they might or might not be like bacteria on Earth. In laboratory conditions, scientists in 2001 were able to get one-celled organisms to incorporate an amino acid—a fundamental building block of life—that no other known life uses. The discovery borders on the creation of artificial life, experts said. It also suggests that ET might operate by entirely different rules than those we’re used to.

If life on Mars is fundamentally different from what scientists understand life to be, then current spacecraft and others in the works may well not recognize what’s right under their mechanical noses.

What is the best title of the passage().

A. Does Mars Harbor Life

B. If We Find ET, Will We Know It

C. Will the Twin Robots Live Up to Us

D. Why Search ET As We Don’t Know It

加快少数民族和民族地区发展不仅是一个经济问题，而且还是一个（）。

A、和谐问题

B、社会问题

C、政治问题

你被派往国外去执行一个关于电信方面的大项目的谈判。在抵达酒店的时候，你发现了一个邀请你和第二天上午就要见面的谈判对手共进晚餐的短信。晚餐过程中的谈话大多属于闲聊，很少提及公事。主人问了你许多关于你的家庭、兴趣以及你在他们国家有没有亲戚或经常联系的其他人等方面的问题。他们还想知道许多关于你的受教育情况、专长以及和你做过生意的其他公司等关于你个人背景的情况。这些提问都很礼貌，但你考虑的是他们真正想知道的是什么。第二天上午主人亲切地问候了你。你也准备好了要至少花上30分钟来谈论家庭问题来减少在人们谈及生意之前的风险。根据他们的交易方式，你遇到的主人具备下列选项中的哪种特征（）.

A.重视背景环境

B.不重视背景环境

C.亲切友善

D.表达力强

怎样才算正确使用安全带？

有关干、支流交汇水域的特点，下列说法正确的是（）。

A.干流与支流相互作用明显，交汇水域的水势复杂

B.进出干、支流交汇水域的船舶通航密度大，船舶会遇态势复杂

C.A、B均对

D.A、B都错