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【单选题】
在垄断厂商的短期均衡时,垄断厂商可以A.
亏损
B.
利润为零
C.
获得利润
D.
上述情况都可能存在
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】As an engineer, you can't be careful. You should pay attention to every detail.
A.
very
B.
too
C.
so
D.
quite
【单选题】Be careful when you deal with this chemical, as it will explode when _____ to sunlight. [ ]
A.
being exposed
B.
to expose
C.
exposing
D.
exposed
【判断题】The UN says the world must do much more to reduce the number of overweight children.
A.
正确
B.
错误
【单选题】The UN must do something before the war _______beyond control.
A.
escalated into
B.
escalated
【单选题】The UN must do something before the war _______ beyond control.
A.
escalated
B.
appoved
C.
represented
D.
justified
【单选题】Be careful when you watch the painting as it is______.
A.
valueless
B.
priceless
C.
costless
D.
worthless
【单选题】The 'Minamata Bay' example in the first paragraph proved that ______.
A.
if mankind do something harmful to the environment, vice versa, the indeed victims are themselves
B.
a local industry which had released mercury into Minamata Bay was the real murderer
C.
how this highly toxic element stored up in the bodies of local fish and eventually harmful to the bodies of people who consumed the fish
D.
the theory of pollution
【单选题】Be careful when you deal with this chemical, as it will explode when ______ to sunlight.
A.
exposed
B.
to expose
C.
exposing
D.
being exposed
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