C．moving of a country to a new place

D．reasons for lowland flooding

解析：主旨大意题。这篇短文主要讲述了全球变暖造成的恶劣影响，故答案选B。A、C、D三项都是细节。

答案：B

2．According to scientists，the DIRECT cause of more and fiercer storms is ________.

A．greenhouse gas emissions in industrialized nations

B．higher surface water temperatures of the sea

C．continuous global warming

D．rising sea levels

解析：细节理解题。根据第三段中"Many scientists connect higher surface water temperatures resulting from global warming to greater and more damaging storms."可判断出造成严重的暴风雨的直接原因是海洋表面水温太高。

答案：B

3．Laupepa was not satisfied with the United States because it did not ________.

A．agree to reduce its greenhouse gas emissions

B．sign an agreement with Tuvalu

C．allow Tuvaluans to move to the US

D．believe the problems facing Tuvalu were real

解析：细节理解题。第四段第一句话表示Laupepa对美国不满意的原因是美国拒绝签署号召工业化国家减少温室效应气体排放的国际性公约。

答案：A

4．The country whose situation is similar to that of Tuvalu is ________.

A．Australia　　　　　　 B．New Zealand