Climate is the average weather usually t

题型:阅读理解

问题:

Climate is the average weather usually taken over a 30-year time period for a particular region and time period. Climate is not the same as weather, but rather, it is the average pattern of weather for a particular region. Weather describes the short-term state of the atmosphere (大气).

The climate is changing. Many agreed that climate change may be one of the greatest threats (威胁) facing the planet. Recent years show increasing temperatures in various regions, and/or increasing extremities (极端性) in weather patterns.

Is the Earth getting warmer? Yes! The Earth has warmed by about 1°F over the past 100 years. But why? Well, scientists are not exactly sure. The Earth could be getting warmer on its own, but many of the world’s leading climate scientists think that things people do are helping to make the Earth warmer.

Global Warming may be a big problem, but can you make a difference? Yes! There are several little things you can do to make a difference. Try carpooling. This will help reduce the amount of fossil fuels going into the atmosphere. Whenever you use electricity, you help put greenhouse gases into the air. Turn off lights, the television, and the computer when you are through with them. Also, planting trees is fun and a great way to reduce greenhouse gases. Trees absorb carbon dioxide, a greenhouse gas, from the air. Finally, don’t forget about recycling.

小题1:Climate is         weather.

A.the same as

B.different from

C.a kind of

D.part of小题2: The Earth has warmed by about 1°F over the past 100 years         .

A.only because of human activities

B.but scientists are not exactly sure of the reasons.

C.and we can do nothing to it.

D.and it’s getting warmer on its own小题3:Global Warming may be a big problem, but we can do the following things to make a difference except          .

A.carpooling

B.saving electricity

C.cutting down more trees

D.recycling小题4:What can be the best title of the article?

A.Climate and weather.

B.Weather and climate changing.

C.Climate changing and global warming.

D.Weather and global warming.

考点:健康环保类阅读科教类阅读
题型:阅读理解

在学完一篇逻辑结构严密的课文以后,勾画出课文的论点与论据的逻辑关系图以帮助理解和记忆。这种学习方法属于( )。

A.精细加工策略
B.组织策略
C.复述策略
D.做笔记策略

题型:阅读理解

丁香油酚是香烟添加剂中的一种成分,可令吸烟者的口及肺部出现少量痳痹,从而产生轻微的快感.丁香油酚与乙酸酐发生乙酰化反应,可得一种香料,其结构简式如图,则该有机物可发生的反应类型有:(  )

①取代②加成③消去④酯化⑤水解⑥氧化⑦加聚.

A.①②④⑤⑥

B.①②③⑤⑦

C.①②⑤⑥⑦

D.①②④⑤⑦

题型:阅读理解

鲁迅说:"不满是向上的车轮。"这表明( )

A.理想是人们的一种美好愿望

B.理想是人们前进的动力

C.理想产生于现实的需要

D.理想是人生的奋斗目标

题型:阅读理解

将一块质量为5.8g的铁合金(成分为铁和碳)放入烧杯中,再向烧杯中加入94.6g稀H2SO4,恰好与铁合金中的铁完全反应(碳不溶于稀H2SO4),所得氢气的质量为0.2g.已知含碳量高于2%的铁合金为生铁,含碳量低于2%的铁合金为钢,试根据计算回答:

(1)该铁合金是生铁还是钢?

(2)反应后所得溶液中溶质的质量分数是多少?

题型:阅读理解

说明使用交流发电机电压调节器的注意事项。

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