问题 综合

下图是世界局部洋流示意图,读图回答下列问题(每空1分,共8分)

(1)如果该海域为北太平洋,图示A、B、C、D洋流中为暖流的是____________ ,为寒流的是__________

(2)暖流对沿岸气候有________作用;寒流对沿岸气候有________作用。

(3)图中甲乙丙三处可能形成大型渔场的是______成因是___________。

(4)北印度洋附近形成_____洋流,在忻州下雪的季节,该洋流呈____时针方向流动。

答案

(1)A  D         B   C     (2)增温增湿    降温减湿

(3) 甲   寒暖流交汇,浮游生物繁盛,鱼类饵料丰富,形成渔场

(4) 季风  逆

题目分析:(1)若图示位于北太平洋,则A为日本暖流;B为千岛寒流;C为加利福尼亚寒流;D为北赤道暖流。(2)暖流对沿岸气候起增温增湿的作用;寒流对沿岸气候起降温减湿的作用。(3)寒暖流交汇处,利于渔场形成,故图示甲处位于寒暖流交汇处,利于渔场形成。(4)北印度洋地区,受南亚季风气候的影响,形成季风洋流,在北半球冬季,南亚受东北季风影响,则海水自东向西流形成逆时针流动。

点评:本题难度低,学生只要掌握世界主要地区的洋流分布,并能结合洋流对沿岸气候、渔场形成的影响等内容即可判断,注意结合南亚的季风风向判断北印度洋的洋流流向。

单项选择题
填空题

[A] A machine has been developed that pulps paper and then processes it into packaging, e.g. egg-boxes and cartons. This could be easily adapted for local authorities use. It would mean that people would have to separate their refuse into paper and non-paper, with a different dustbin for each. Paper is, in fact, probably the material that can be most easily recycled; and now, with massive increases in paper prices, the time has come at which collection by local authorities could be profitable.

[B] Recycling of this kind is already happening with milk bottles, which are returned to the dairies, washed out, and refilled. But both glass and paper are being threatened by the growing use of plastic. More and more dairies are experimenting with plastic bottles, and it has been estimated that if all the milk bottles necessary were made of plastic, then British dairies would be producing the equivalent of enough plastic tubing to encircle the earth every five or six days!

[C] The package itself is of no interest to the shopper, who usually throws it away immediately. Useless wrapping accounts for much of the refuse put out by the average London household each week. So why is it done Some of it, like the cellophane on meat, is necessary, but most of the rest is simply competitive selling. This is absurd. Packaging is using up scarce energy and resources and messing up the environment.

[D] The trouble with plastic is that it does not rot. Some environmentalists argue that the only solution to the problem of ever growing mounds of plastic containers is to do away with plastic altogether in the shops, a suggestion unacceptable to many manufacturers who say there is no alternative to their handy plastic packs.

[E] Little research, however, is being carried out on the costs of alternative types of packaging. Just how possible is it, for instance, for local authorities to salvage paper, pulp it and recycle it as egg-boxes Would it be cheaper to plant another forest Paper is the material most used for packaging--20 million paper bags are apparently used in Great Britain each day--but very little is salvaged.

[F] It is evident that more research is needed into the recovery and re use of various materials and into the cost of collecting and recycling containers as opposed to producing new ones. Unnecessary packaging, intended to be used just once, and making things look better so that more people will buy them, is clearly becoming increasingly absurd. But it is not so much a question of doing away with packaging as using it sensibly. What is needed now is a more sophisticated approach to using scarce resources for what is, after all, a relatively unimportant function.

[G] To get a chocolate out of a box requires a considerable amount of unpacking: the box has to be taken out of the paper bag in which it arrived; the cellophane wrapper has to be torn off, the lid opened and the paper removed; the chocolate itself then has to be unwrapped from its own piece of paper. But this insane amount of wrapping is not confined to luxuries. It is now becoming increasingly difficult to buy anything that is not done up in cellophane, polythene or paper.

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