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问题 综合

读“非洲气候类型分布图”，回答下列问题。

（1）非洲气候具有气温高、干燥地区广、气候类型南北对称分布三个显著特征，试分别分析形成原因。

___________________________________________________________________________________________

（2）图中A、B两地区同为_____________气候类型，分别叙述其形成的主要原因。

答：_______________________________________________________________________________。

答案

（1）非洲纬度低，大部分地区在南北回归线之间；受副热带高压和信风带影响的地区面积大；赤道横贯中部，南北所跨纬度大致相等。

（2）热带雨林；A处常年受赤道低气压的影响，B处为东南信风迎风地带，山地迎风坡的抬升作用造成降水多，沿岸暖流有增温增湿作用

填空题

只有理解他人，才能_______。
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单项选择题

The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether.

The hold of a fishing boat contains only cod, haddock, and halibut. If a fish is selected at random from the hold, what is the probability that it will be a halibut or a haddock ？（）
(1)There are twice as many halibut as cod in the hold, and twice as many haddock as halibut.
(2) Cod account for 1/7 of the fish by number in the hold.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.
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