血K+浓度升高或血Na+浓度降低时,醛固酮的分泌减少。
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排尿的初级中枢与大脑皮层失去联系时,可出现尿潴留。
A. 对
B. 错
This meeting is regarded as the most important meeting concerning climate change ver held.
A. treated
B. looked
C. considered
D. named
The pollution is getting increasingly serious, particularly in developing countries.
A. partly
B. properly
C. specially
D. especially
Most of the countries have applied strict policies to protect the environment.
A. issued
B. announced
C. adopted
D. reformed