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【单选题】
在下列图中，表示种群在无环境阻力状况下增长的是 [ ]A.
B.
C.
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【单选题】The purpose of this passage is likely to______.
A.
warn people about the effects of carbon emissions
B.
reveal the IPCC's major findings in 'carbon budget'
C.
explain the symbolic threshold of 2℃ of warming
D.
refute sceptics' argument about climate change
【单选题】The main purpose of the fifth generation computer effort is ______.
A.
to use molecules instead of electronic elements
B.
to express logical symbols in the way of chemical units of DNA
C.
to obtain true artificial intelligence
D.
to take the place of human thoughts
【单选题】The author's purpose of writing this passage is to ______.
A.
urge the governments to take effective measures
B.
illustrate the urgent demand of clean energy
C.
encourage developed nations to set up an example in the energy revolution
D.
elaborate the difficulties in the use of clean energy
【单选题】The primary purpose of the passage is to______.
A.
raise concerns about the reliability of eyewitness identification
B.
disprove the role of culture in influencing perception
C.
question the accuracy of juries in criminal trials
D.
shed light on the differences between perception and actuality
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