According to the passage, only about ______ of the earth's surface is not covered with water.
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下列词语中加下划线字的读音完全正确的一项是()
A. 凌(líng)汛 不容置喙(yuán) 笑靥(yè) 一暴(pū)十寒
B. 剖(pōu)析 反璞(pú)归真 气概(kài) 望风披靡(mǐ)
C. 肱(gōng)骨 不落窠(kē)臼 角(jué)色 揆情度(duó)理
D. 缜(shěn)密 原形毕露(lù) 恫吓(hè) 金蝉脱壳(qiào)
【B6】
A. himself
B. he
C. him
某工程网络计划共有10项工作,其中A工作为起始工作,其紧后工作为B,B工作的紧后工作为C,持续时间分别为3天,4天,4天,B工作的总时差为2天,则B工作的最迟开始时间为()。
A. 3天
B. 4天
C. 5天
D. 7天
We may face a severe worldwide water shortage in the future because ______.
A. some of it has been polluted
B. the small amount of fresh water is constantly being replaced by rainfall
C. our need for fresh water is increasing rapidly