中国人民银行根据执行货币政策的需要，可以决定对商业银行贷款的数额、期限、利率和方式，但贷款的期限不得超过（  ）。

上消化道出血患者，对失血性休克最敏感的观察指标是（  ）

统计上所说的误差泛指（）之差，样本指标与总体指标之差。

妊娠42周男婴，出生4周后烦躁声嘶，喂养情况不好，脐周膨隆，肌张弱，可能的诊断是（   ）。

中央银行的“三大传统法宝”有（    ）。

巯嘌呤引入磺酸基后可制成钠盐得到磺巯嘌呤钠，目的是

Passage1

    Come on-Everybody'sdoing it. That whispered message, half invitation and half forcing, is  what most of us think of when we hear thewords peer pressure. It usually leads to no good-drinking, drugs and casualsex. But in her new book Join the Club, Tina Rosenberg contends that  peer pressure can also be a positive forcethrough what she calls the social cure, in which organizations and officialsuse the power of group dynamics to help individuals improve their lives andpossibly the word.

    Rosenberg, therecipient of a Pulitzer Prize, offers a host of examples of the social cure inaction: In South Carolina, a state-sponsored antismoking program called RageAgainst the Haze sets

 out to make cigarettesuncool. In South Africa, an HIV-prevention initiative known as loveLife  recruits young people to promote safe sexamong their peers.

     The idea seemspromising, and Rosenberg is a perceptive observer. Her critique of the lamenessof many pubic-health campaigns is spot-on: they fail to mobilize peer pressurefor healthy habits ,and they demonstrate a seriously flawed understanding of psychology.   "Dare to be different, please don'tsmoke!" pleads one billboard campaign aimed at reducing smoking amongteenagers-teenagers, who desire nothing more than fitting in. Rosenberg arguesconvincingly that public-health advocates ought to take a page from advertisers, so skilled at applyingpeer pressure.

     But on the generaleffectiveness of the social cure, Rosenberg is less persuasive. Join the Clubis filled with too much irrelevant detail and not enough exploration of thesocial and biological factors that make peer pressure so powerful. The mostglaring flaw of the social cure as it's presented here is that it doesn't workvery well for very long. Rage Against the Haze failed once state funding wascut. Evidence that the loveLife program produces lasting changes is limited andmixed.

     There's no doubtthat our peer groups exert enormous influence on our behavior. An emerging bodyof research shows that positive health habits-as well as negative ones-spreadthrough networks of friends via social communication. This is a subtle form ofpeer pressure: we unconsciously imitate the behavior we see every day.

    Farless certain, however, is how successfully experts and bureaucrats can selectour peer groups and steer their activities in virtuous directions. It's likethe teacher who breaks up the troublemakers in the back row by pairing themwith better-behaved classmates. The tactic never really works. And that's theproblem with a social cure engineered from the outside: in the real world, asin school, we insist on choosing our own friends.

Paragraph 5 shows that our imitation of behaviors_______.

在手工课上，李老师常常出示图片或实物引导幼儿观察，还鼓励和支持幼儿用积木、纸盒、拼板等各种材料进行制作活动。这说明李老师（）

撤销权自债权人知道或者应当知道撤销事由之日起（  ）行使。

从流行病学的定义可知，流行病学的研究对象为（ ） 。

高血压患者，伴发心悸（HR99次／分）和劳力性心绞痛时，应首选的药物是