问题补充:
At the United Nations Climate Change Conference, the UN Secretary General points out that, , the climate situation will get worse and worse.
A. if not dealing with properly
B. unless dealing with properly
C. if properly dealt with
D. unless properly dealt with
答案:
A. if not dealing with properly
B. unless dealing with properly
C. if properly dealt with
(答案→)D. unless properly dealt with
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