降温池

Providing relief after the disaster necessitated the mobilization of vast amounts of food，medical supply and people.

阅读理解

     You are only as old as you feel, it is said. But soon scientists will be able to calculate your real

"physiological (生理的) age".

     Researchers studying genes believe they can now tell exact physiological age by looking at a

number of clues in DNA. They don't have to ask people how they feel or look at their appearance.

     The breakthrough could solve the mystery of why some 70-year-olds function at the level of those

in their 50s, while others become weak sooner than you would think.

     The researchers made the breakthrough by finding the "biomarkers" of aging in tiny worms.

     The worms they studied had an average lifespan (寿命) of three weeks. Like humans, some remain

lively much longer than other similarly-aged worms, while others show signs of premature aging.

     By genetically profiling (基因识别) 104 different worms at various ages, the researchers found a

group of genes that are involved in the aging process.

     'This is a first step; our results were not perfect, but we were able to predict the ages of the animals

70 percent of the time, which is far better than anything that has been done before," said Simon Melov,

the lead researcher at Buck Institute for Age Research in California.

     Now they want to extend their studies to mice and eventually humans.

     "I am confident that at some point there will be a non-subjective method of determining how old

someone is with a high level of confidence," said Melov.

     The speed at which people age depends on a number of things including genetic inheritance (遗传),

lifestyle and mental health.

     Determining chronological (按时间顺序的) age in both worms and humans is easy - count forward

from birth. But determining physiological age has remained subjective ? based on how someone looks

or functions.

     The findings have major implications for age research in humans. Examining biomarkers over time

would provide a scientific basis for anti-aging medicines. The technology would also provide a means

of determining whether a person is aging faster or slower than people would normally think.

1. How can researchers tell one's exact physiological age?

A. By looking at their appearance.                  

B. By asking people how they feel.      

C. By looking at a number of clues in DNA.  

D. By finding the "biomarkers" of aging in tiny worms.

2. What did the researchers base their survey on as their first breakthrough?

A. Humans.      

B. Worms.      

C. Mice.    

D. Lifespan.

3. The researchers found__________.

A. some 70-year-olds function become weak sooner than expected.

B. anyone was as old as he was feeling.

C. a group of genes were involved in the aging process.

D. the speed at which people age only depends on their genetic inheritance.

4. What is the best title of the passage?

A. Genetically profiling    

B. Find your true age 

C. Worms and humans      

D. Research in humans

液体石油产品的质量计量是指用质量流量计的计量方法。

尾管固井推荐使用紊流高速替泥浆，但在确认大小胶塞要啮合时，一般要（）。

A、降低排量

B、提高排量

C、保持不变

D、停泵

某咨询企业拟参加投标获得咨询业务，业主其中一个项目由于接受了亚洲开发银行的货款，所以使用了亚洲开发银行倡导的框架合同采购方式，另外一个项目准备采用公开招标方式进行招标。

框架合同适用于哪些项目