介入或负荷显像的目的是（）。 A.了解脏器或组织的贮备功能 B.了解脏器的血流 C.

下列函数有最小值的是（　　） A．y= 2 x B．y=- 1 2x C．y=- 1 16 x2 D．y= 1 8 x2- 5 2

已知：（1）A是XY型氧化物，它是黑色粉末；（2）将A和稀硫酸共热，得溶液B，向B中滴入适量溶液，生成白色沉淀，过滤后得滤液C；（3）将C分成两份，在一份中加入烧碱溶液，可得蓝色絮状沉淀D；（4）往另一份C中放入一枚新铁钉，有单质E析出。已知A、B、C、D、E相互关系如图所示。

（1）写出A、B、C、D、E各物质的化学式：A__________，B__________，C__________，D__________，E__________。

（2）请写出上述反应中离子方程式。

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有关第一审公诉案的审限问题，下列哪个说法是错误的

A．当事人和辩护人申请通知新的证人到庭，审判人员根据具体情况，同意该申请，并宣布延期审理，则依照上述规定延期审理的时间不得超过15天，延期审理的时间不计人审限

B．依照法律规定辩护人拒绝辩护或被告人当庭拒绝辩护人为其辩护，而依据法律规定另行委托，指定辩护人或者辩护律师的，自案件宣布延期审理之日起至第10日止。准备辩护时间不计人审限

C．在审判过程中，自诉人或者被告人患严重疾病致使案件在较长时间内无法继续审理的，人民法院应当裁定中止审理，中止审理的原因消失后，应当恢复审理。中止审理的期间不计人审理期限

D．审理期间，对被告人作精神病鉴定的时间不计人审理期限

Questions 16～20

It is already common knowledge, on the beaches and in the cafes of mainland Europe, that Americans work too hard—just as it is well known on the other side of the Atlantic that Europeans, above all the French and the Germans, are slackers who could do with a bit of America’s vigorous work ethic.
But a new survey suggests that even those vacations American employees do take are rapidly vanishing, to the extent that 40 per cent of workers questioned at the start of the summer said they had no plans to take any holiday at all for the next six months, more than at any time since the late 1970s.
It is probably mere coincidence that George W. Bush, one of the few Americans who has been known to enjoy a French-style month off during August, cut back his holiday in Texas to a fortnight. But the survey by the Conference Board research group, along with other recent statistics, suggests an epidemic of overwork among ordinary Americans.
A quarter of people employed in the private sector in the US get no paid vacation at all, according to government figures. Unlike almost all other industrialized nations, including Britain, American employers do not have to give paid holidays.
The average American gets a little less than four weeks of paid time off, including public holidays, compared with 6.6 weeks in the UK—where the law requires a minimum of four weeks off for full-time workers—and 7.9weeks for Italy. One study showed that people employed by the US subsidiary of a London-based bank would have to work there for 10 years just to be entitled to the same vacation time as colleagues in Britain who has just started their jobs.
Even when they do take vacations, overworked Americans find it hard to switch off. One in three find not checking their email and voicemail more stressful than working, according to a study by the Travelocity website, while the traumas of travel take their own toll. "We commonly complain we need a vacation from our vacations," the author Po Bronson wrote recently. "We leave home tired; we come back exhausted "
Christian Schneider, a German-born scholar at the Wharton business school in Philadelphia, argues that there is "a tendency to really relax in Europe, to disengage from work. When an American finally does take those few days of vacation per year they are most likely to be in constant contact with the office. "
Mindful that well-rested workers are more productive than burnt-out ones, the accounting firm PricewaterhouseCoopers has started closing all its US offices completely twice a year, for 10 days over Christmas and about five around Independence Day. "We wanted to create an environment where people could walk away and not worry about missing a meeting, a conference call or 300 emails," Barbara Kraft, a partner at the company, told the New York Times.
Left to themselves, Americans fail to take an average of four days of their vacation entitlement—an annual national total of 574 million unclaimed days.

Why do Americans "... need a vacation from our vacations"(para. 6) ______

A. Because they do not have enough vacations compared with Europeans.
B. Because they cannot take their mind off work during their vacations.
C. Because emails and voicemails that keep pouring in disrupt their vacations.
D. Because travel is more stressful and exhausting than their normal work.

以下哪项与苯妥英钠不符（）

A.具酰亚胺结构

B.易溶于水，水溶液呈碱性

C.其水溶液露置于空气中吸收二氧化碳变浑浊

D.与哌啶-硫酸铜试液反应显红色

E.治疗癫痫全身性和部分性发作