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【单选题】
示例一:压力、压强的概念:( 2019·武威) 生活处处有物理,留心观察皆学问。下列生活中的现象及其解释正确的是( )。A.
啄木鸟的嘴很尖细，可以减小压强，从而凿开树干，捉到躲藏在深处的虫子；
B.
打开高速行驶的大巴车车窗时，窗帘往外飘，是因为车外空气流速大，压强小；
C.
水坝修建为上窄下宽是因为液体压强随深度增加而减小；
D.
珠穆朗玛峰顶的大气压强比兰州市地面的大气压强大
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【单选题】But Mr. Specter doesn't have ______ against other drivers.
A.
kindness
B.
approval
C.
malice
D.
motivation
【单选题】But they raise the specter of how reliant we are on our phones-and how much influence phones have in our social lives.
A.
dependent
B.
form; make up
C.
understand
D.
make the most of
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A.
scarcity
B.
scare
C.
scary
D.
scarce
【简答题】Chomsky initiated the distinction between______and performances.
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