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【单选题】
若函数 , ,则下列结论正确的是( )
A.
.
B.
.
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举一反三
【单选题】The vegetables in his field ________ well, because they are pollution­free.
A.
are selling
B.
have been sold
C.
are sold
D.
sell
【单选题】As regards social conventions, we must say a word about the well known English class system. This is an embarrassing subject for English people, and one they tend to be ashamed of, though during the p...
A.
who were born as aristocrat
B.
who have the right to sit in the House of Lords
C.
who speak in many different local accents
D.
who are prosperous businessmen or who work in some professions
【单选题】Although he was a green hand in the research field, he succeeded ______ other more well-known experts failed. [     ]
A.
which
B.
that
C.
what
D.
where
【单选题】As regards social conventions, we must say a word about the well-known English class system. This is an embarrassing subject for English people, and one they tend to be ashamed of, though during the p...
A.
who were born as aristocrat
B.
who have the right to sit in the House of Lords
C.
who speak in many different local accents
D.
who are prosperous businessmen or who work in some professions
【单选题】They their side of the field very well.
A.
defended
B.
protected
C.
keep
D.
prevent
【判断题】正直、诚恳、认真、乐于助人等属于性格的意志特征()
A.
正确
B.
错误
【简答题】The well-field system regulated that the field could be only allowed to be used but not .
【单选题】As regards social conventions, we must say a word about the well-known English class system. This is an embarrassing subject for English people, and one they tend to be ashamed of, though during the p...
A.
who were born as aristocrat
B.
who have the right to sit in the House of Lords
C.
who speak in many different local accents
D.
who are prosperous businessmen or professionals
【判断题】高速切削螺纹时,进给量一般小于0.1mm。
A.
正确
B.
错误
【单选题】The vegetable looking fresh in his field ______well. It’s often sold out immediately it appears in the market.
A.
has sold
B.
has been sold
C.
is sold
D.
sells
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