题目内容
（请给出正确答案）
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
更多“The fact that the mass of a particle is equivalent to a certain of energy means tha”相关的问题
A、meticulous
B、careless
C、casual
D、informal
A、A biological clock makes us alert when we need to be.
B、Even if a person has worked all day and didn't make up the lost sleep, he would still be likely to feel alert at the same time every evening.
C、Clock-dependent alerting redeems a person's heavy load of sleep debt.
D、The late afternoon/evening period of mental alertness results from a lack of sleep.
A、(1) and (3)
B、(1) and (4)
C、(2) and (3)
D、(2) and (4)
“While the increase in carbon dioxide in the atmosphere is the main effect of global warming, there are other effects as well. For example, there is a marked increase in infectious diseases that have changed their range in the past few years. Cases of malaria and dengue fever have occurred as far north as New York, New Jersey and Michigan in recent years, and diseases such as encephalitis and becoming more common. The sea level has changed, affecting low-lying areas and destroying beaches and wetlands around the world. Glaciers and snow cover are gradually disappearing on all five continents. And finally, plant and animal populations are shifting and migration patterns are changing as species try to adapt to changing climates. Some species that are unable to adapt successfully have begun to decline. More severe weather events, such as droughts and flooding, are also a consequence of global warming, and a warning that action must be taken to preserve the environment now.” (From “The Sierra Club Global Warming Campaign” in J. Buckley, ed., The Harbrace Reader for Canadians, p. 273) From what perspective does the passage discuss global warming?
A、First-person narrator
B、Second-person narrator
C、Third-personal narrator
D、None of the above
警告：系统检测到您的账号存在安全风险
为了保护您的账号安全，请在“简答题”公众号进行验证，点击“官网服务”-“账号验证”后输入验证码“”完成验证，验证成功后方可继续查看答案！
