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【多选题】
设A，B为两个事件，以下哪些表述是不正确的（ ）。A.
若A，B相互包含，则P(A∪B)=P(A)+P(B)
B.
若A，B互不相容，则P(A∪B)=P(A)+P(B)
C.
若A，B相互独立，则P(AB)=P(A)·P(B)
D.
若A，B互不相容，则P(AB)=P(A)P(B)
E.
若A，B相互独立，则P(B|A)=P(B)
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举一反三
【简答题】细胞凋亡的诱导因素有哪些?
【单选题】Seeing my tearful eyes, he worriedly asked me ________.
A.
what wrong was
B.
what was wrong
C.
what the matter was
D.
what is the matter
【单选题】It is ( ) impossible to find a good English-speaker in this small town.
A.
hardly
B.
barely
C.
nearly
D.
merely
【单选题】I want to find a good way ________ my English.
A.
improve
B.
improving
C.
to improve
D.
of improve
【判断题】It is impossible to find a job if the applicant does not have a good command of English.
A.
正确
B.
错误
【单选题】You should have ____ good knowledge of English if you want to find a job here. Because English is the working language in_______ most international trade centers.
A.
不填；the
B.
不填；不填
C.
a; 不填
D.
a; the
【判断题】Good spoken and written English skills are essential for a non-native student to find a good job in the USA.
A.
正确
B.
错误
【单选题】The chances of seeing a helicopter in my hometown are one ________ a million.
A.
for
B.
to
C.
in
D.
against
【判断题】Decide whether the following statements are True or False according to the article in PPT 1.2 Good spoken and written English skills are essential for a non-native student to find a good job in the US...
A.
正确
B.
错误
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