在Fireworks中，切片是统一存储在（）层的。A、所属图层 B、网页层 C、共享

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       Want to stay away from colds? Put on a happy face. Compared to unhappy people, those who are

cheerful and relaxed are less likely to suffer from cold, according to a new study. It's possible that being

happy helps the body fight illnesses, say the researchers from New York University.

       "It seems that positive(积极的) feelings may reduce the danger of illness," said the study's chief

researcher Sheldon Cohen.

       In an earlier study, Cohen found that people who were cheerful and lively caught coughs and colds

less often People who showed positive feelings were also less likely to tell their doctors that they felt ill.

       In this study, Cohen's study interviewed 193 adults every day for two weeks. During the interviews,

the people told researchers about the happy or sad feelings they had that day.

       After the two weeks, the people were given colds by doctors and had to stay alone in a room for six days.

       The result showed that everyone in the study was equally likely to get ill. But for people who said they felt happy during the  research  period , their illness was less serious and lasted for a shorter time.

       Cohen believes that when people experienced positive feelings, their body may produce a chemical

that helps fight illness and disease. So if you are worried about your health, look on the bright side more

often.

1. Which of the following was NOT a part of the study'?

A. People talked about their feelings every day.

B. People were kept alone. for six days.

C. People were given colds by doctors.

D. People were made to feel unhappy.

2. What did the study find?  

A. People who felt happy never got ill.

B. People's feelings didn't influence their health.

C. People with good feelings became ill more easily.

D. People with positive feelings had less serious ill-nesses.

3. According to Cohen, which of the following may help fight illness?

A. Eating.              

B. Crying.

C. Laughing.            

D. Sleeping.

4. This passage is a/an ________. 

A. advertisement        

B. newspaper report

C. story                    

D. scientist's diary

5. What is the best title for this passage?

A. Smiles can fight colds

B. Cause of colds found

C The danger of colds

D. How people get sick

女性，25岁，半个月前开始性情急躁，失眠，怕热，出汗和心慌，血清甲状腺素增高。

下列哪种检查能较好地评价甲状腺功能亢进（）

A.基础代谢

B.甲状腺摄取¹³¹I测定

C.B型超声波

D.CT

E.甲状腺穿刺

诉讼中的国民待遇是指一国境内的外国人在民事诉讼方面不享有与本国公民同等的权利。

加少量表面活性剂或润滑剂可以克服混合时摩擦起电的现象。

在建立表间一对多的永久联系时，主表的索引类型必须是______。