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举一反三
【多选题】滑坡来临前,山坡可能( )
A.
坡脚处泉、井水位或水量突变。
B.
土质滑坡张开的裂缝延伸方向与斜坡延伸方向平行，弧形特征较为明显。
C.
坡脚处土体上隆。
D.
山坡上房屋的地板、墙壁出现裂缝，墙体歪斜。
E.
动物惊恐，植物变形，树木枯萎或歪斜。
【单选题】Technological influences have also crept into the lives of athletes. It's not just the latest drug on the market that they use it's also the most up to date equipment. Innovations include: the use of ...
A.
various performance-improving drugs
B.
the development of modern technology
C.
innovative equipment in the sports field
D.
technological influences on other people