问题 选择题

Not until he called the secretary three times _________ that the manager went to an important meeting.

A.did he tell

B.he told

C.was he told

D.he was told

答案

答案:C

考查倒装句,not until放句首时,后面的主句要用部分倒装句式,即提前助动词或者情态动词到主语之前,根据该句的句意可知,he和告诉之间是被动关系,所以选择C

句意为,直到他叫了秘书三次,他才被告诉经理去开一个重要的会议了、

单项选择题

阅读以下文字回答下面问题。
不像诸如行星的运动、光的行进等物理现象,有生命的东西的行为从未归纳为严格的自然规律,也许永远不会。有许多人坚持,对人类的行为研究不可能成为一门真正的科学,也就是说不能在普通的自然规律的基础上来解释和判断任何给定情势的人类行为。但是,生命并不是不受自然规律支配的例外情况,生物的行为也是完全可以解释的,假如所有的因素都知道了的话,难处就在后面那个短语所说的。所有的因素都知道是不可能的,因素太多了、太复杂了。然而,人类能够了解自己,对此无需绝望。在获得对人类自己的复杂精神的更好的知识方面存在着广阔的天地。即便我们决不会到达这一道路的终点,我们还渴望沿着它走很长的一段路程。
不仅因为问题特别复杂,而且对于这一问题的研究时间也不很长。现代物理学出现于1600年,化学出现于1775年,而“实验心理学”这一更为复杂的研究仅仅从1879年开始,德国生理学家冯德在这一年建立了第一个对人类的行为进行科学研究的实验室。冯德先生主要感兴趣的是感觉以及人感知周围世界的细节的方式。
几乎与此同时,兴起了应用于一个特定方面的人类行为的研究——在这种研究中把人当成一种工业齿轮。1881年美国工程师泰勒开始测量做某一特定工作所需要的时间。泰勒是头一个“效率专家”,象所有效率专家一样,倾向于看不见停表之外的价值,在工人中是不受欢迎的。

“后面的那个短语”指的是( )。

A.生物的行为也时可以解释的
B.假如所有因素都知道的话
C.所有的因素都知道是不可能的
D.因素太多了,太复杂了

单项选择题

El Nino is the term used for the period when sea surface temperatures are above normal off the South American coast along the equatorial Pacific, sometimes called the Earth’s heartbeat, and is a dramatic but mysterious climate system that periodically rages across the Pacific.

El Nino means "the little boy" or "the Christ child" in Spanish, and is so called because its warm current is felt along coastal Peru and Ecuador around Christmas. But the local warming is just part of an intricate set of changes in the ocean and atmosphere across the tropical Pacific, which covers a third of the Earth’s circumference. Its intensity is such that it affects temperatures, storm tracks and rainfall around the world.

Droughts in Africa and Australia, tropical storms in the Pacific, torrential rains along the Californian coast and lush greening of Peruvian deserts have all been ascribed to the whim of EI Nino. Until recently it has been returning about every three to five years. But recently it has become more frequent--for the first time on record it has returned for a fourth consecutive year--and at the same time a giant pool of unusually warm water has settled down in the middle of the Pacific and is showing no signs of moving.

Climatologists don’t yet know why, though some are saying these aberrations may signal a worldwide change in climate. The problem is that nobody really seems sure what causes the El Nin o to start up, and what makes some per than others. And this makes it particularly hard to explain why it has suddenly started behaving so differently.

In the absence of EI Nino and its cold counterpart, La Nina, conditions in the tropical eastern Pacific are the opposite of those in the west. the east is cool and dry, while the west is hot and wet. In the east, it’s the winds and currents that keep things cool. It works like this. Strong, steady winds, called trade winds, blowing west across the Pacific drag the surface water along with them. The varying influence of the Earth’s rotation at different latitudes, known as the Coriolis effect, causes these surface winds and water to veer towards the poles, north in the northern hemisphere and south in the southern hemisphere. The surface water is replaced by colder water from deeper in the ocean in a process known as upwelling.

The cold surface water in turn chills the air above it. This cold dense air cannot rise high enough for water vapor to condense into clouds. The dense air creates an area of high pressure so that the atmosphere over the equatorial eastern Pacific is essentially devoid of rainfall.

Paragraphs 2 and 3 are written to()

A. discuss the causes of climatic irregularities

B. exemplify the abnormal effects of EI Nino

C. explain the way in which EI Nino develops

D. show the recent observations of scientists