生态系统中的生产者主要是指（） A.绿色植物 B.肉食动物 C.食草动物 D.微型动

German study suggests that people who were too optimistic about their future actually faced greater risk of disability or death within 10 years than those pessimists who expected their future to be worse.

The paper，published this March in Psychology and Aging，examined health and welfare surveys from roughly 40,000 Germans between ages 18 and 96.The surveys were conducted every year from 1993 to 2003.

Survey respondents (受访者) were asked to estimate their present and future life satisfaction on a scale of 0 to 10，among other questions.

The researchers found that young adults (age 18 to 39) routinely overestimated their future life satisfaction，while middle­aged adults (age 40 to 64) more accurately predicted how they would feel in the future.Adults of 65 and older，however，were far more likely to underestimate their future life satisfaction.Not only did they feel more satisfied than they thought they would，the older pessimists seemed to suffer a lower ratio (比率) of disability and death for the study period.

“We observed that being too optimistic in predicting a better future than actually observed was associated with a greater risk of disability and a greater risk of death within the following decade，”wrote Frieder R．Lang，a professor at the University of Erlangen­Nuremberg.

Lang and his colleagues believed that people who were pessimistic about their future may be more careful about their actions than people who expected a rosy future.

“Seeing a dark future may encourage positive evaluations of the actual self and may contribute to taking improved precautions (预防措施)，”the authors wrote.

Surprisingly，compared with those in poor health or who had low incomes，respondents who enjoyed good health or income were associated with expecting a greater decline.Also，the researchers said that higher income was related to a greater risk of disability.

The authors of the study noted that there were limitations to their conclusions.Illness，medical treatment and personal loss could also have driven health outcomes.

However，the researchers said a pattern was clear.“We found that from early to late adulthood，individuals adapt their expectations of future life satisfaction from optimistic，to accurate，to pessimistic，”the authors concluded.

小题1:According to the study，who made the most accurate prediction of their future life satisfaction?

A．Optimistic adults.

B．Middle­aged adults.

C．Adults in poor health.

D．Adults of lower income.小题2:Pessimism may be positive in some way because it causes people________.

A．to fully enjoy their present life

B．to estimate their contribution accurately

C．to take measures against potential risks

D．to value health more highly than wealth小题3:How do people of higher income see their future?

A．They will earn less money.

B．They will become pessimistic.

C．They will suffer mental illness.

D．They will have less time to enjoy life.小题4:What is the clear conclusion of the study?

A．Pessimism guarantees chances of survival.

B．Good financial condition leads to good health.

C．Medical treatment determines health outcomes.

D．Expectations of future life satisfaction decline with age.

2006年11月，某市得利灯具有限责任公司职员郑某因劳动合同方面的几个问题与得利公司发生争议。郑某遂求助于市法律援助协会。设你是法律援助协会工作人员，请就本案回答郑某提出的下列问题：

关于解决此纠纷的合法程序，下列说法中正确的有( )。

A．若郑某与得利公司的合同中并不包括仲裁协议，则不能提起仲裁程序

B．劳动者和用人单位均不服劳动争议仲裁委员会的同一裁决，向同一人民法院起诉的，人民法院可以并案审理，双方当事人互为原告和被告

C．若双方经劳动争议调解委员会调解，就劳动合同具体内容达成协议，之后得利公司反悔，则不得就此调解协议主张权利

D．若仲裁过程中双方经调解达成了协议，后一方反悔拒不执行，则另一方应向人民法院提起诉讼，不能就调解协议申请强制执行

教师在讲授完《师说》一课中"其"字作副词的用法后，让学生列举相同用法的句子，以下不符合要求的一项是（）。

A.生乎吾前，其闻道也固先乎吾

B.与尔三矢，尔其无忘乃父之志

C.欲加之罪，其无辞乎

D.圣人之所以为圣，愚人之所以为愚，其皆出于此乎

欧洲货币市场经营业务的范围是指（）

A.流通于欧洲各国的货币存放和贷放

B.境外货币的存放和贷放

C.市场所在国货币的存储和贷放

D.综合货币单位的存放和贷放

龙债券最适宜的发行规模是( )亿美元。

A．5

B．3～5

C．2.5～3

D．1.5