[单项选择]下列哪个不是货币的目的或功能？（）
A. 价值储藏；
B. 交易媒介；
C. 避免通货膨胀冲击；
D. 记账单位。

[单选题]远控台管汇减压阀的出口压力的调整范围为( )MPa。
A.7~14;
B.0~21;
C.7~21;
D.0~14。

[单项选择]某工程单代号网络计划如下图所示，其关键线路有( )条。
A. 4
B. 3
C. 2
D. 1

[多选题]下列哪些细菌是目前医院感染常见的细菌
A.葡萄球菌特别是金黄色葡萄球菌和凝固酶阴性葡萄球菌
B.大肠埃希菌
C.沙门菌
D.铜绿假单胞菌
E.肺炎链球菌

[单项选择]The FDA may rescind its approval of Avastin, a colon-cancer drug.
If the summer of 2009 was the season of "death panels," as the debate over health-care reform exploded, this is the season of "17.5k dead women a year. " That’s the body count scaremongers are predicting if the Food and Drug Administration rescinds its provisional approval of the drug Avastin for metastatic breast cancer, a decision expected by year’s end. Although the move has nothing to do with the new health-care law, uncertainty about "Obama-care" has given opponents an opening to terrify people about what’s coming—like bureaucrats rationing health care to save money.
The reality is far different and, for those who care more about helping cancer patients than about scoring political points, much sadder. That’s because in 2008, when the FDA gave "fast track" approval for Avastin in breast cancer that has metastasized—usually to the lungs, bones, liver, or brain—it was conditional on the manufacturer, Genente
A. It can help malignant cells grow blood vessels to sustain them.
B. It can extend the lives of patients with metastatic colorectal and kidney cancer.
C. It can extend the lives of patients with breast cancer.
D. It can help patients have a better quality of life during their last months.

[单选题]护士在临床护理工作中对某一护理措施效果进行观察与研究,护士充当的角色是
A.护理者
B.管理者
C.科学研究者
D.教育者

[简答题](46) It is known that the brain shrinks as the body ages, but the effects on mental ability are different from person to person. Interestingly, in a study of elderly men and women, those who had more education actually had more brain shrinkage.
"That may seem like bad news," said study author Dr. Edward Coffey, a professor of psychiatry and of neurology at Henry Ford Health System in Detroit. (47) However, he explained, the finding suggests that education allows people to withstand more brain tissue loss before their mental functioning begins to break down.
The study, published in the July issue of Neurology, is the first to provide biological evidence to support a concept called the "reserve" hypothesis, according to the researchers. In recent years, investigators have developed the idea that people who are more educated have greater cognitive reserves to draw upon as the brain ages; in essence, they have more brain tissue to spare.
(48) Examining brain