According to the passage, the sea-level rise is mainly caused by_____.
A.policies of short-sighted governments
B.overdevelopment of the human beings
C.greenhouse gas emissions
D.global climatic change
第2题
溃疡型肠结核病变肠段X线钡餐造影表现为()。
A.跳跃征象
B.多发性浅龛影
C.充盈缺损
D.颗粒变化
E.线条样改变
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