皮皮学，免费搜题
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【多选题】
下列属于预防未成年人犯罪法规定的严重不良行为的有( )。A.
旷课，夜不归宿
B.
传播淫秽的读物或者音像制品等
C.
参与赌博，屡教不改
D.
吸食、注射毒品
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】Suppose that Dent Carr's long run total cost of repairing s cars per week is c(s)=3s 2 + 27.If the price he receives for repairing a car is 30, then in the long run, how many cars will he fix perweek ...
A.
5
B.
0
C.
10
D.
7.5
【简答题】あの部屋は夏は暑いです。冬は大変寒いです。
【单选题】The scientist ______ most of his experiments if he had not run short of his fund.
A.
would finish
B.
had finished
C.
would have finished
D.
ought to have finished
【简答题】Paulo will hurt his ankle if he will run to far
【单选题】Since there was no way out, the robber decided to _______on his luck to see if he could run away. [ ]
A.
make a chance
B.
take chance
C.
take a chance
D.
try a chance
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