皮皮学，免费搜题
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【单选题】
单发飞机停车后,在高度一定的情况下,逆风下滑,地速( ),下滑角( ),下滑距离( ),滑翔比( )。A.
减小，增大，增大，减小
B.
减小，增大，缩短，减小
C.
减小，减小，增大，增大
拍照语音搜题，微信中搜索"皮皮学"使用
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举一反三
【单选题】If you don' t know a word, you can ________ the word in a dictionary.
A.
look up
B.
look down
C.
look over
D.
look out
【单选题】You should the new words that you don’t know how to spell.
A.
look for
B.
look up
C.
look after
D.
look down
【单选题】You can't put it here. You must _____ the right place. [ ]
A.
look at
B.
look for
C.
look down
D.
look up
【单选题】If you don't know the word, you can _____ in the dictionary.
A.
look it after
B.
look at it
C.
look for it
D.
look it up
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