北京时间2010年10月1日19时整我国航天事业又迎来一个历史性时刻,嫦娥2号卫

题型:选择题

问题:

北京时间2010年10月1日19时整我国航天事业又迎来一个历史性时刻,嫦娥2号卫星成功发射,已经发射的嫦娥二号卫星新开辟了地月之间的“直航航线”,即直接发射至地月转移轨道,这使嫦娥二号卫星的地月飞行时间缩短至不到5天。据此回答各题

小题1:材料中出现的天体只属于

①太阳系 ②地月系 ③银河系 ④河外星系 ⑤总星系 ⑥可见宇宙 ⑦宇宙

A.①②③④⑤⑥⑦

B.①②③⑤⑥

C.①②④⑤⑦

D.①②③⑤⑥⑦小题2:嫦娥2号卫星发射成功时,旧金山(西八区)老华人激动不已,当地的区时是:

A.1日2时

B.1日3时

C.2日3时

D.2日4时小题3:嫦娥二号卫星的地月飞行期间,下列叙述正确的是

A.地球绕日公转速度逐渐减慢

B.太阳直射点向北移动

C.南半球各地正午太阳高度角达一年中最大值

D.嘉兴地区的昼越来越短,夜越来越长小题4:与地球上生命存在无关的因素是          

A.地球的体积和质量适中

B.地球自西向东绕日公转

C.日地距离适中,地表温度适宜

D.地球附近大小行星各行其道,互不干扰

考点:探索宇宙宇宙的演化
题型:选择题

欧洲西部大西洋沿岸主要的气候类型是(  )

A.地中海气候

B.温带海洋性气候

C.温带大陆性气候

D.温带季风气候

题型:选择题

欧洲美元定期存款期货合约实行现金结算方式,是因为()。

A.它不易受利率波动的影响

B.欧洲美元定期存款单不可转让

C.欧洲美元不受任何政府保护,因此信用等级较低

D.交易者多,为了方便投资者

题型:选择题

小明想利用一块电流表和阻值已知的电阻R0测量未知电阻Rx的阻值。小明选择了满足这个实验要求的实验器材,并连接了部分实验电路,如图所示。

(1)为了测出电阻Rx的阻值,请你只添加两根导线完成图所示的实验电路的连接。

(2)只闭合开关S1,电流表的示数用I1表示;开关S1、S2都闭合时,电流表的示数用I2表示。请你用I1、I2和R0表示Rx。Rx =____________。

题型:选择题

在面向对象方法中,把一组具有相同数据结构和相同操作的对象的集合定义为______ 。此定义包括一组数据属性和在数据上的一组合法操作。

A.聚合

B.类

C.结构

D.主题

题型:选择题

Sadness isn’t manly—this Eric Weaver knew. When depression engulfed this New York police sergeant, it took a different guise: a near-constant state of anger. "One minute I’d be okay and the next minute I’d be screaming at my kids and punching the wall," he recalls. "My kids would ask, ’What’s wrong with Daddy Why’s he so mad all the time’" For years, Weaver didn’t know what was wrong.

Weaver’s confusion about what tortured him was not unusual. Roughly a third of the 18 million or more Americans who suffer depression each year are men. Yet all too often, experts say, men fail to recognize the symptoms and get the treatment they need.

For years, experts suspected that gender makes a big difference in depression. Studies from New York to New Zealand have repeatedly found the same startling statistic: About twice as many women as men suffer from depression. That finding was considered one of the bedrock facts of modern mental health. Yet it has recently come under attack from critics who are concerned about underreporting of male depression.

William Pollack, Director of the Center for Men at McLean Hospital, is leading the charge against the well-entrenched depression gender gap. He argues that men’s rate of depression may be nearly equal to women’s. Just look at suicide rates, he says: Male suicides outnumber females four to one. That ratio "is way too high to say that men’s depression numbers are so low," he notes.

Pollack and others contend that male depression goes unrecognized because, unlike the female version, it often doesn’t fit the textbook signs—at least in the early stages. Clinical depression at later stages looks much the same in both sexes. But in the prelude to a breakdown, that deepening despair is often expressed in very different ways. Instead of being weepy, men are more apt to be irritable and angry—moods that aren’t included in the classic diagnostic tests. "Their sadness and helplessness are hidden behind a mask of anger," says Pollack.

"Men tend to act out" to avoid dealing with uncomfortable feelings, adds Fredric Rabinowitz, a psychologist who works primarily with men. If they feel bad, they’re apt to get into fights on the job or at home, withdraw from family and friends, become obsessed with work or hobbies. Most significantly, men often turn to drinking or drugs. Men have two to four times the rate of substance abuse problems as women, and Pollack contends that if this was recognized as a sign of depression, the gender gap would substantially narrow.

Studies from New York to New Zealand suggested that()

A. women’ mental health was worse than men’s

B. men are 50% less depressed than women

C. different gender faces different depressions

D. gender differences explained the depression rates

更多题库