单项选择题
How to dispose （） the nuclear waste is a pressing problem for scientists and politicians alike.
A.of B.with C.through D.behind
单项选择题 Harry（）his pants at the seams (接缝) when he bent over.
单项选择题 There would be about 10 million other planets in the universe that could physically（）the earth.
单项选择题 He went ahead（）all warnings about the danger of his mission.
