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更多“3) The warming is having_______________ impacts as Arctic sea ice has thinned, and spring comes abou…”相关的问题
By "at best, the results point to the least change people can expect", (Paragraph 3) the researchers try to tell us that
A．the impact of climate change is relatively minor.
B．the global warming is inevitable in the near future.
C．concentrations of greenhouse gases cannot be held steady.
D．the atmospheric conditions will be better than people think.
The word this in Paragraph 3 refers to______.
A．the effect of the hot and cold aspects by the sun on the earth
B．the distribution of the earth's atmospheric pressure
C．the solar-weather interactions
D．the warming effect of carbon dioxide
Among "humanity's current problems" (Line 6, Para. 3), the chief concern of the scientists is______.
A．the impoverishment of developing countries
B．the explosion of the human population
C．the reduction of biological diversity
D．the effect of global warming
Please Listen to the following TED talk and answer the questions followed. (12分25秒-13分31秒） Global warming is already affecting people. And the speaker then cited some facts to further proving his argument which includes
A、Moscow the year before and Europe in 2000
B、There are more than three standard deviations outside the norm
C、The Texas, Oklahoma, Mexico heatwave and drought last year
D、In recent years, because of global warming, they now cover about 10 percent -- an increase by a factor of 15 to 50
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
(31)
A．A summer heat wave.
B．The warming trend.
C．A global disaster.
D．The greenhouse effect and attendant problems.
乙型肝炎患者或病毒携带者
甲型肝炎病毒感染人体后，即出现抗-HAV IgM和IgG抗体，IgM抗体多持续3～6个月，18G抗体存在时间更长，前者是近期或急性感染的标志，后者多做为流行病学调查的主要标志。
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听力原文： Recently completed research reveals warmer oceans caused by global warming is making it more difficult for fish to breathe and survive.
Biologists have known for years declining fish stocks arc connected to global warming, but a new study of eelpouts—big-headed fish that resemble eels—is the first to go deeper and see how warmer seas are connected to how fishes take in oxygen.
Scientists studied the relationship between sea temperature and eelpouts counts in the Southern North Sea, combining data from the field with lab investigations of eelpout physiology.
The researchers not only found the oxygen levels in the waters of the North and Baltic Seas have dropped because of increasing temperatures over the past 50 years--a factor that reduces fish population— they also discovered eelpouts need more oxygen in warmer waters, a second factor that is reducing their numbers.
A key factor in the diminishing size offish stock is increased difficulty in absorbing oxygen via respiration and blood circulation caused by the warming waters.
Animals tolerate a limited range of environmental conditions. Anything out of their tolerance can cause damage. Fish in the North Sea have evolved to tolerate a wider range of temperatures than fish elsewhere because of the large seasonal fluctuations there.
Worldwide, warming waters can be expected to strain species that require lots of oxygen, forcing them to either relocate to cooler waters or face extinction.
(27)
A．Some species have been extinct since global warming.
B．Biologists have known for years declining fish stocks are connected to global warming.
C．Global warming has caused the seawater warmer.
D．It is more difficult for fish to breathe and survive in warmer oceans caused by global warming.
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