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【简答题】
为了简化计算,通常可以认为刚才是理想的_________。
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】过滤介质对悬浮物的过滤作用包括筛分作用、深层效应和 三方面。
【单选题】--How many people have died in the bomb explosion? ---They say they’ve had reports that more than a hundred people died but cannot ______ this.
A.
require
B.
advise
C.
demand
D.
confirm
【单选题】—How many _____ have you got? —I've got many. [ ]
A.
photoes
B.
photo
C.
photos
D.
a photo