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举一反三
【单选题】Water— the Issue of This Century The world is running short of fresh water．Populations are growing bigger and thirstier(渴的), with the result that fresh water is becoming increasingly scarce(缺乏)．Half t...
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】Text 2 We recently sailed with our research ship through the Red Sea to the Indian Ocean where we did research work for about a year. Our main objectives (目标) were the little-known Maldi...
A.
the coral reef exists in regions with warm climate
B.
the coral reef provides favorable living conditions for them
C.
the creatures are away from the danger of being eaten by sharks
D.
most sea creatures feed on the colourful coral
【单选题】造成我国近海海域海水富营养化程度不断加重的主要原因是( )。
A.
大量生活污水和富含有机物的工业废水被直接排入大海
B.
渔业捕捞的失控
C.
近海的石油开采
D.
近大陆架消化污染的能力比较差