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【单选题】
下列溶剂中极性最强的是A.
Et 2 O
B.
EtOAc
C.
MeOH
D.
n － BuOH
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【单选题】In the author’S opinion．in order to enhance public’S awareness of climate change，the universities should_______．
A.
make more videos to popularize scientific findings
B.
encourage scientist to communicate more with the public
C.
make more public intellectuals of social scientists
D.
restrain the time allocated by scientists to unpractical researches
【单选题】Which of the following is the characteristic of China's climate?
A.
cold and humid in the north
B.
warm climate and distinctive seasons for most parts
C.
plentiful rainfall in the southwest
D.
lowest precipitation in the northeastern inland area
【简答题】In today’s corporate climate, most regular salary hikes have shrunk or disappeared.(翻译)
【单选题】The world's demand on gas is expected to increase in the future as climate change concerns grow, while renewable energy is still expensive to be developed, a prominent economist said on Friday. 'Deman...
A.
How long shall we wait to use the renewable energy?
B.
Renewable energy is getting cheaper as technology becomes more advanced.
C.
Climate change concerns results in revolution on the use of energy.
D.
Gas demand is to sharply increase as climate change concerns grow.
【单选题】Any perceivable alterations in climate could provide an exact description of today's climate.
A.
sensible
B.
thankful
C.
appreciable
D.
valuable
【简答题】As we know, the earth's climate has changed over time.The present rate of climate change depends, in large part, on human activities.Today, people all over the world are everyday choices that h...
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