B
Big snowstorms and cold air swept across Northern China in the first week of November.
At the same time, a global (全球的) meeting on climate change was held in Glasgow, Scotland. There, leaders from around the world tried to deal with global warming.
Why are we having such a cold winter on a warming planet? In fact, the  cold  winter  and  global  warming  are  not  contradictory. Global warming does not happen evenly (均衡地) on earth, and it leads to more extreme (极端的) heat and cold.
Because of the warming climate, China has seen a growing temperature in winter. It has risen by 0.41℃ every 10 years since 1961. But in some cases, the country has also seen extreme cold—for example, the icy weather in early 2008.
Global warming has changed the earth’s air circulation (循环), affecting the local weather through sea-air or land-air interaction (相互作用). For example, in October, La Nina affected China. It was caused by strong winds above the Pacific Ocean. It brought more cold air to China. Another reason for the cold weather is the warming Arctic, according to BBC. It is warming almost three times as fast as any other place on earth. The polar vortex (极地涡旋)—a rotating (旋转的) pool of cold air—becomes active as the temperature rises there. So lots of cold Arctic air then goes southward.
Will this winter be much colder? The official forecast (预报) said a cold winter is possible. Northern China may see more snow than usual, and Southern China, less rainfall than usual.
() 5. What does the underlined sentence mean?
A. We may have cold winter under global warming.
B. Global warming doesn’t happen in cold winter.
C. The cold winter leads to global warming.
D. The cold winter has nothing to do with global warming.
() 6. The icy weather in early 2008 may show that global warming ______.
A. doesn’t happen everywhere B. is not as serious as we thought
C. can cause more heat and rain D. can also lead to more cold
() 7. When La Nina happened, China ______.
A. had a rise in temperature B. went through extreme floods
C. was much colder than usual D. had a hotter summer than usual
() 8. The cold weather in October in China was affected by cold Arctic air from ______.
A. ab B. ac
C. bc D. bd

三、信息还原(10分)
Safety education is important, especially for us students. It helps us with knowledge to avoid dangers. 1. Here are three main reasons why every student should study it.
First, it can develop our safety sense. Follow rules in different places. At school, don’t run. 2. Outside, always watch before crossing the street, and don’t use phones while walking.
Second, it helps reduce the risk. In daily internet use, don’t share personal information online. Be serious about making friends online. Reports show that students who have studied safety have a nearly 40% decrease(减少) in danger. 3.
Third, it helps us develop survival skills. We can quickly know what to do when we’re in danger. 4. With this knowledge, we have a higher chance of surviving in a fire.
5. Teenagers should actively learn, practise, and spread safety knowledge. Only in this way can we make safety education all around our lives.