问题 选择题

下图为某时赤道南北天气状况示意图(单位:百帕),读图回答下列问题。

小题1:下列说法正确的是  (   )

A.甲天气系统东侧盛行偏北风,形成暖锋

B.乙天气系统中心气流旋转下沉,东侧为暖锋

C.①和②锋面分别向东南和西北方向移动

D.m地阴雨连绵,n地天气晴朗小题2:上右图中正确反映①锋面过境期间,g地温度变化过程的是  (   )

A.A    

B.B    

C.C    

D.D

答案

小题1:D

小题2:C

题目分析:

小题1:风向是从高压指向低压,北半球受地转偏向力右偏形成,所以甲天气系统东侧盛行偏南风,形成暖锋;乙天气系统为气旋,其中心气流上升;因甲天气系统逆时针向里辐合,受其影响,①锋面向西南移动,乙天气系统顺时针向里辐合,受其影响,②锋面向东南移动;而m地位于暖锋锋前,多阴雨天气,n地位于冷锋锋前,为晴朗天气。故选D。

小题2:①锋面属于冷锋,所以受其影响,g地的气温下降,且锋面过境时,气温降低幅度大,对比图中四条曲线的变化特点,应为C曲线。故选C。

填空题


In the following passage, there are 20 blanks representing the words that are missing from the context. You are to put back in each of the blanks the missing worD.The time for this section is 20 minutes.
Many things about language are a mystery, and many will always remain so. But some things we do know.
First, we know that all human beings have a language of some sort. (1) is no race of men anywhere on earth so backward that it has (2) language, no set of speech sounds by which the people communicate with one (3) . Furthermore, in historical times, there has never been a race of men (4) a language.
Second, there is no such thing as a primitive language. There are many people (5) cultures are underdeveloped, who are, as we say, uncivilized, but the (6) they speak are not primitive. In all known languages we can see complexities (7) must have been tens of thousands of years in development.
This has not (8) been well understood; indeed, the direct contrary has often been stateD.Popular ideas (9) the language of the American Indians will illustrate. Many people have supposed that the Indians (10) in a very primitive system of noises. Study has proved this (11) be nonsense. There are, or were, hundreds of American Indian languages, and all of them (12) out to be very complicated and very old.They are certainly (13) from the languages that most of us are familiar with, but they are (14) more primitive that English and Greek.
A third thing we know about language (15) that all languages are perfectly adequate. That is, each one is a perfect (16) of expressing the culture of the people who speak the language.
Finally, we (17) that language changes. It is natural and normal for language to change; the (18) languages which do not change are the dead ones. This is easy to (19) if we look backward in time. Change goes in all aspects of language. (20) features change as do speech sounds, and changes in vocabulary are sometimes very extensive and may occur very rapidly. Vocabulary is the least stable part of any language.

单项选择题