指挥红军粉碎国民党对中央苏区第四次“围剿”的是谁？

舌下神经核上性损害时，伸舌偏向（）

A.病灶对侧

B.病灶同侧

C.无偏斜

D.伸舌不能

E.受累颏舌肌对侧

图所示为实验室中常见的气体制备和收集装置．

请回答下列问题：

（1）实验室用高锰酸钾制取氧气，应选用发生装置______（填字母序号），反应的化学方程式为______．若用装置D收集氧气，验满的方法是______．

（2）实验室用过氧化氢溶液和二氧化锰制取氧气，若选用C做发生装置，你认为选用C的优点是______．

（3）欲使用装置E用排空气法收集二氧化碳，则气体应从______（填“a”或“b”）端通入；欲使用装置E用排水法收集氧气，先将瓶中装满水，再将气体从______（填“a”或“b”）端通入．

（4）已知一氧化氮气体难溶于水，在空气中容易与氧气发生反应，则收集一氧化氮气体时应选用图中装置______（填字母序号）．

阅读下面短文，回答下 * * 道题。

美国时代生活公司1990年出版的《人类文明史图鉴》一书显示，史学家不可能只是超然物外的旁观者。就拿鸦片战争来说，作者谈到英国东印度公司对华贸易难以展开时写道：“在马戛尔尼大使扩大英国与中国贸易行动失败的情况下，该公司只好自己想办法来维持贸易平衡。但东印度公司能用什么商品来打开中国市场呢答案就是鸦片。”

看来其中的因果关系是很明显的；因为英方一系列要求(增加通商口岸、减低税率、设立租界等)未获应允，东印度公司才不得已求助于鸦片。

其实，即使清政府当初一切照英方的安排行事，不法鸦片贸易仍无法避免。第一次鸦片战争后，英方的要求悉数满足，鸦片交易还是不能禁绝，这是最能说明问题的例证。而且《人类文明史图鉴》一书并不讳言：清朝政府早在1729年就颁布了禁烟诏令，嘉庆皇帝一即位 (1796年)就下令再次禁烟，但在18世纪末，每年仍有大约1 200箱的鸦片运销中国，其中大部分来自孟加拉，东印度公司垄断了那里的鸦片生产。

“18世纪末”这一表述方式比较模糊。实际上，在马戛尔尼出使中国(1793年)之前，鸦片走私已很猖獗。18世纪70年代初，东印度公司因经营不善而岌岌可危。黑斯廷斯1774年担任英属印度总督之后就采取了以邻为壑的政策：如果听任印度农民吸食当地盘产的鸦片，财政上当然不无小补，但东印度公司的利益最终将受到损害，即失去健壮的劳动力；在他的坚持下，东印度公司垄断的鸦片销往中国，于是偷运“福寿膏”逐渐成为英属印度的支柱产业。尽管这位黑斯廷斯在1785年遭受弹劾,但他的鸦片走私政策却留给东印度公司滚滚不断的财源，直到20世纪仍有英国史学家对黑斯廷斯当年的“远见”大加赞赏。可以毫不夸张地说，到了19世纪初，英国在印度的统治是靠中国的银两来维持的。

伯克在弹劾黑斯廷斯时称东印度公司是“有史以来最堕落的公共机构”，其成员系“人类的垃圾、渣滓”。当时鸦片问题尚未浮现在公众的视野之内，伯克即使有所听闻大概也不会就此问罪。至于马戛尔尼，使华前曾任东印度公司的要职，他不知道清廷明令禁止的鸦片贸易一直在进行吗

下列属于史学家不可能只是超然物外的旁观者的一项是（）。

A．《人类文明史图鉴》中对谈到英国东印度公司对华贸易难以展开时的记述

B．《人类文明史图鉴》中关于鸦片交易不能禁绝的记述

C．伯克在1785年弹劾黑斯廷斯

D．有些英国史学家对黑斯廷斯当年的“远见”大加赞赏

阅读理解。

     For more than twenty years scientists have been searching for signs of life on other planets. Most of

these searches have been done over the radio. The hope is that someone in outer space may be trying to

get in touch with us. Scientists also have sent radio and television messages on spaceships traveling through space, on the chance that someone may answer such messages.

    Scientists are using powerful radio telescopes to listen to signals from about 1, 000 stars, all within 100

light years of the earth. In addition, they will scan the entire sky to "listen" for radio messages from more

distant stars. Using a computer, they will be able to monitor more than eight channels at one time.

Scientists are looking for any signal that stands out from the background noise.

     Of the 200 billion stars in the Milky Way galaxy(银河星系), scientists find that 5% are like our sun.

Perhaps half of them have a planet like the earth. Such a planet would be a reasonable distance from the

star for temperatures to be right for the evolution(进化) of life. Based on the inhabitable (适于居住的)

planets in our galaxy, most scientists agree that chances are likely that one or more of these planets

support some life.

     However, many scientists wonder whether intelligent life exists on other planets. Some believe that

twenty years of searching without any intelligible messages shows that no one is out there. They say that

the evolution of intelligence comparable to ours is unlikely.

     Other scientists believe that our search hasn't been long enough to rule out the possibility that intelligent

life exists in our galaxy. If we hope to find intelligent life, these scientists believe that we have to keep

looking.

1. According to the passage, how many planets in our galaxy might be inhabitable?

A. 5 billion.

B. 10 billion.

C. 15 billion.

D. 200 billion

2. The first paragraph in this passage is mainly about ________ .  

A. how scientists are looking for signs of life on other planets

B. why scientists are looking for signs of life on other planets

C. where scientists are looking for signs of life on other planets

D. when scientists are looking for signs of life on other planets

3. The underlined word "monitor" in the 2nd paragraph means " ________ ".

A. find  

B. block

C. check  

D. form

4. Which of these statements is True based on the information in the passage?

A. The earth is one of the oldest planets in our galaxy.

B. Most scientists believe that there is intelligent life on other planets.

C. Scientists don't believe that there might be life on other planets.

D. Scientists are trying different ways to find signs of life on other planets.

在PowerPoint 2003中，下列选项关于选定幻灯片的说法错误的是（）。

A.在浏览视图中单击幻灯片，即可选定

B.如果要选定多张不连续幻灯片，在浏览视图下按Ctrl键并单击各张幻灯片

C.如果要选定多张连续幻灯片，在浏览视图下，按下Shift键并单击最后要选定的幻灯片

D.在普通视图下，不可以选定多个幻灯片