题目内容

【题目】读经纬网示意图.完成下列内容

(1)写出A、D两点的经纬度。

A(_________,__________);

D(_________,_________ )。

(2)判断B、C两点的半球位置。

从南、北半球看,B点位于_________半球;

从南、北半球看,C点位于_________半球。

(3)A点在C点的___________方向。

【答案】

(1)A(40°W,40°N) B(0°,20°E)

(2)北,南

(3)正北

【解析】

试题分析:

(1)在经纬网上,经线的度数叫做经度,若相邻两条经线的经度向东增大,就是东经,用符号E表示,若相邻两条经线的经度向西增大,就是西经,用符号W表示;纬线的度数叫纬度,若相邻两条纬线的纬度向北增大,就是北纬,用符号N表示,若相邻两条纬线的纬度向南增大,就是南纬,用符号S表示。据图可知:A点的坐标是(40°W,40°N); D点的坐标是(0°,20°E)。

(2)我们以赤道为界将地球划分为南北半球,赤道以北为北半球,以南为南半球;以20°W和160°E组成的经线圈为界将地球划分为东西半球,20°W以东、160°E以西为东半球,20°W以西、160°E以东为西半球。据图可知:从南、北半球看,B点位于北半球,C点位于南半球。

(3)地图上定向的方法很多,对于一般地图,通常是面对地图上北下南,左西右东;有指向标的地图,根据指向标定向,一般来说,指向标箭头指向北方;有经纬网的地图,根据经线指示南北方向,纬线指示东西方向来确定方向。据图可知:A点在C点的正北方向。

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【题目】B

On Lunar New Years Eve on Feb 18, 2015, Beijing had a good day. PM2. 5 levels were below 50. However, the nice day ended with firework celebrations at night.

In the first hour after the start of the celebration, PM2. 5 levels rose to 500 in certain parts of the city, with the average across the city around 400.

According to the China National Environmental Monitoring Center, on Lunar New Years Day, air pollution reached dangerous levels in 201 Chinese cities, because of fireworks, with more than 40 of them seeing serious pollution. As a result, the debate on whether to ban (禁止) fireworks during the Spring Festival is also heating up.

Sina surveyed 3,000 Internet users, and results show that only 38 percent of the people support setting off fireworks, and 60 percent are against it.

I support a ban on fireworks, a netizen (网民) nicknamed ann019 said. Lighting fireworks can only bring problems: air pollution, disturbing sleep, causing fire and exhausting sanitation workers (环卫工人).

Others thought it to be hard to ban traditions, and lighting fireworks during holiday seasons wont cause lasting pollution.

Some, however, suggest a moderate (温和的) way to solve the problem.

As a tradition, fireworks absolutely add to the festivals happiness. They shouldnt be banned totally, commented netizen Tracy on the China Daily online forum (论坛). But the time /span>should be reduced. For example, it can be allowed just during New Years Eve, the first day of the Lunar New Year and the Lantern Festival.

【1】___________________ caused serious air pollution on Lunar New Years Eve.

A. The factories B. The cars

C. The fireworks D. The bad weather

【2】 ___________________ cities saw serious air pollution on Lunar New Years Day.

A. 201 B. More than 40

C. Around 400 D. 500

【3】According to Sinas survey, over half of the Internet users ___________________ setting off fireworks.

A. are against B. enjoy

C. support D. dont care about

【4】___________________ was not mentioned by the netizen nicknamed ann019.

A. Exhausting sanitation workers B. Disturbing sleep

C. Wasting money D. Causing fire

【5】According to the passage, we know ___________________ is a moderate way to solve the problem.

A. to ban fireworks totally

B. to reduce the time of setting off fireworks

C. to get more people to set off fireworks

D. to never change the tradition

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