Why does the author compare the "forced riders" to second-hand s-考呗网题库移动版

单选题 Why does the author compare the "forced riders" to second-hand smokers?

A．They have little responsibility for public health problems.
B．They are vulnerable to unhealthy environmental conditions.
C．They have to bear consequences they are not responsible for.
D．They are unaware of the potential risks they are confronting.

参考答案C

解析:根据题干中的“forced riders”和second—hand smokers定位到文章第四段第一句：0n the flip side，there are many“forced riders”，who are suffering from the climate change impacts despite having SCarcely contributed to the problem．和最后一句：This is much like a non-smoker getting cancer from second—hand smoke，while the heavy smoker is fortunate enough to smoke in good health．
事实细节题。定位句指出，气候问题上的那些“被迫上车的乘客”，排放很少，受气候变化影响却很大，而吸二手烟的人，自己没有吸烟，却因为吸二手烟罹患疾病，两者的相似之处显然在于，他们都是在承受自己不应为之负责的后果，故答案为C.。
A.“他们对公共健康问题没有什么责任”．这一点只能用于说明吸二手烟的人，不能说明“被迫上车的乘客”与之相似的地方，可以排除；B.“他们都容易因不健康的环境条件而受损”，从第三段和第四段的阐述目的来看，作者是要陈述气候变化的责任问题，因此B.的说法偏离陈述主题，可以排除；D.“他们没有察觉自己面临的潜在风险”，文中并没有说明他们是否察觉和意识到自己面临的风险，可以排除。

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单选题What does the author say about the $100 billion funding?

A．It will motivate all nations to reduce carbon emissions.
B．There is no final agreement on where it will come from.
C．There is no clarification of how the money will be spent.
D．It will effectively reduce greenhouse emissions worldwide.

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单选题 what urgent action must be taken to realise the Paris climate agreement?

A．Encouraging high-emitting nations to take the initiative.
B．Calling on all the nations concerned to make joint efforts.
C．Pushing the current world leaders to come to a consensus.
D．Putting in effect the policies in the agreement at once.

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单选题Questions are based on the following passage.
Teenagers at risk of depression, anxiety and suicide often wear their troubles like a neon (霓虹灯)sign. Their risky behaviors--drinking too much alcohol, using illegal drugs, smoking cigarettes and skipping school--can alert parents and teachers that serious problems are brewing.
But a new study finds that there's another group of adolescents who are in nearly as much danger of experiencing the same psychiatric symptoms: teens who use tons of media, don't get enough sleep and have a sedentary (不爱活动的) lifestyle.
Of course, that may sound like a description of every teenager on the planet. But the study warns that it is teenagers who engage in all three of these practices in the extreme who are truly in jeopardy.Because their behaviors are not usually seen as a red flag, these young people have been dubbed the "invisible risk" group by the study's authors.
"In some ways they're at greater risk of falling through the cracks," says researcher Vladimir Carli. "While most parents, teachers and clinicians would react to an adolescent using drugs or getting drunk, they may easily overlook teenagers who are engaging in inconspicuous behaviors."
The study's authors surveyed 12,395 students and analyzed nine risk behaviors, including excessive alcohol use, illegal drug use, heavy smoking, high media use and truancy (逃学). Their aim was to determine the relationship between these risk behaviors and mental health issues in teenagers.
About 58% of the students demonstrated none or few of the risk behaviors. Some 13% scored high on all nine of the risk behaviors. And 29%, the "invisible risk" group, scored high on three in particular: They spent five hours a day or more on electronic devices. They slept six hours a night or less. And they neglected "other healthy activities."
The group that scored high on all nine of the risk behaviors was most likely to show symptoms of depression; in all, nearly 15% of this group reported being depressed, compared with just 4% of the low-risk group. But the invisible group wasn't far behind the high-risk set, with more than 13% of them exhibiting depression.
The findings caught Carli off guard. "We were very surprised," he says. "The high-risk group and low-risk group are obvious. But this third group was not only unexpected, it was so distinct and so large--nearly one third of our sample--that it became a key finding of the study. "
Carli says that one of the most significant things about his study is that it provides new early-warning signs for parents, teachers and mental health-care providers. And early identification, support and treatment for mental health issues, he says, are the best ways to keep them from turning into full-blown disorders.
What does the author mean by saying "Teenagers at risk of depression, anxiety and suicide often wear their troubles like a neon sign" (Lines 1 - 2, Para.1 ) ?

A．Mental problems can now be found in large numbers of teenagers.
B．Teenagers' mental problems are getting more and more attention.
C．Teenagers' mental problems are often too conspicuous not to be observed.
D．Depression and anxiety are the most common symptoms of mental problems.

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