(2010·上海理综)7.如图,水平桌面上放置一根条形磁铁,磁铁中央正上方用绝缘

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问题:

(2010·上海理综)7.如图,水平桌面上放置一根条形磁铁,磁铁中央正上方用绝缘弹簧悬挂一水平直导线,并与磁铁垂直。当直导线中通入图中所示方向的电流时,可以判断出(  )。

A.弹簧的拉力增大,条形磁铁对桌面的压力减小

B.弹簧的拉力减小,条形磁铁对桌面的压力减小

C.弹簧的拉力增大,条形磁铁对桌面的压力增大

D.弹簧的拉力减小,条形磁铁对桌面的压力增大

考点:重力的产生、方向和大小
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II语法填空(共10小题,每题2分,共20分)

仔细阅读下面短文,短文中有10个空格。请按照语境以及括号里的具体要求完成语法填空、词形变化等。答案填写在答题卡标号为26—35的对应位置。

The holiday’s upon us. After months of study, you have some time to yourself. So, why not read a book? Well, some people will say, ‘Why trouble with books? We have the Internet and 26   media that offer a lot more 27  (colour) programs. Books are history!”

But don’t be fooled. There’s still a lot to be said for reading and reading as widely as possible.

One clear reason is that a well-chosen book is a wonderful collection 28       words and expressions, so long as you have a good dictionary, of course. Believe me, it’s far easier to get new English words and expressions from a book or article 29  it is from the TV or the Internet.

But an even more important point is 30   books give you something that modern media simply can not: The webpage is always full of pictures and the text is often designed to make it as easy to read as possible.

Though “easy” may be welcome, 31 (luck) it’s of little use for any long-time development of reading skills and the general language level. For that, there’s still no substitute(替代品) for a book.

But perhaps the best single reason is that simply 32  (choose) what you read and doing it by yourself 33  (mean) that it’s something you do by and for yourself. You can choose what you want to read. It’s hard work,34   while you are reading, you’ll find that what once 35  (seem) like a duty is now a pleasure.

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急性肾衰竭少尿期治疗原则包括()。

A.控制感染

B.补液原则应"量出为入"

C.调节电解质平衡

D.必要时采用透析治疗

E.采用低蛋白、低热量、高纤维素饮食

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中 * * 党十二届五中全会于2010年10月18日审议通过了关于制定国民经济和社会发展第十二个五年规划(简称“十二五”规划)的建议。我国的重大问题,都是先由党中央提出方针政策,然后由国务院拟定实施方案,全国人大审议,全国政协讨论,最后由全国人大作出决定。这说明[ ]

A、全国人大、国务院、全国政协接受中 * * 的领导,协调一致开展工作

B、中 * * 提出的方针政策是通过全国人大、国务院、全国政协变为国家决定的

C、中 * * 是我国的权力机关,全国人大、国务院、全国政协都是其执行机关

D、中 * * 领导国家 * * ,全国人大、国务院、全国政协是行使国家职能的国家机关

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一台直流电动机励磁绕组在220V电压作用下,通过绕组的电流为0.427A,求绕组的电阻是多少?

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Sternbach认为,同一种压力可引起完全不同的临床症状,是由于( )。

A.器官敏感性不同
B.个体的素质不同
C.个体的社会背景不同
D.个体的应对压力能力不同

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