根据我国《民法通则》规定，民事法律行为的一般生效要件包括( )。A．当事人具有相应

患者昨天淋雨后，今天早晨开始打喷嚏、鼻塞、流清涕、头痛，检查见鼻黏膜急性充血，双下鼻甲肿胀，诊断为急性鼻炎

急性鼻炎常见的临床症状包括（）

A.鼻塞

B.打喷嚏

C.伴头痛

D.嗅觉减退

E.有清水样或黏性分泌物

摩托车以速度v₁沿直线运动，突然驾驶员发现正前方s处，有一辆汽车正以v₂(v₂＜v₁)的速度开始减速，加速度大小为a₂，为了避免发生碰撞，摩托车也同时减速，其加速度的最小值可能为（      ）

A．

B．

C．

D．

根据《城市房地产开发经营管理条例》的规定，下列条件中，属于住宅小区等群体房地产开发项目竣工综合验收内容的有( )。

A．城市规划要求配套的基础设施和公共设施的建设情况

B．拆迁安置方案的落实情况

C．单位工程的工程质量验收情况

D．物业管理的落实情况

E．城市规划设计条件的落实情况

阅读理解

     Compared to people with bad attitudes,  people who are cheerful and relaxed are less likely to suffer

from colds,  according to a new study."It's possible that being upbeat helps the body fight illnesses,  "

says Sheldon Cohen,  the study's lead researcher from Carnegie Mellon University (CMU) in Pittsburgh.

     In a previous study,  Cohen and his colleagues put coldcausing viruses into the noses of 334 healthy

adults.People who tended to be cheerful and lively were least likely to develop sniffles,  coughs,  and

other cold symptoms.People who showed positive feelings were also less likely to mention symptoms to

their doctors,  even when medical tests detected those symptoms.

     Those findings were interesting,  but they didn't prove that a person's attitude affects whether he or

she gets sick.Instead,  it was still possible that a person's underlying personality is what matters.Evidence

suggests,  for instance,  that certain people are naturally more likely to be outgoing and optimistic,  with

high selfesteem and a sense of control over life.This would mean that who we are,  not how we feel,  

ultimately decides our chances of catching colds.

     To figure out which mattered more (personality or emotions),  the CMU team interviewed 193

healthy adults.The researchers talked to each person over the phone every evening for 2 weeks.At the

end of the interviewing period,  people got nose drops that contained either cold or flu viruses.Then,  

each person stayed in an isolated room for 5 or 6 days.The results showed that everyone in the study

was equally likely to get infected.Their symptoms,  however,  differed depending on the types of emotions

that they had reported over the previous 2 weeks.Among those who reported good moods and had been

infected with the flu virus,  for example,28 percent developed coughs and stuffy noses.On the other

hand,  those symptoms struck 41 percent of people who had been less upbeat.

1. What would be the best title for the passage?

A. Smiles Turn away Colds

B. An Interesting Way to Beat Colds

C. Be Outgoing and Optimistic to Fight Colds

D. What Matters More,  Personality or Emotions?

2. In the previous study,  people who showed positive feelings______.

A. didn't catch colds as often

B. developed cold symptoms more slowly

C. were less likely to have cold symptoms detected

D. were less likely to feel cold symptoms

3. What mainly decides our chances of catching colds according to the new study?

A. Personality.  

B. Selfesteem.

C. Emotions.  

D. Attitudes.

4. The underlined word "symptoms" probably means________.

A. something that causes cold

B. something that results in cold

C. signs that something exists,  especially something bad

D. changes in your body or mind that show that you are not healthy

漂白粉是次氯酸钙，氯化钙和氢氧化钙的混合物，其主要组分是（）。