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【单选题】
大气中氧气含量约为( )。
A.
19%
B.
21%
C.
30%
D.
40%
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参考答案:
举一反三
【单选题】'Super Girl' may have gone, but it has left young people with the belief they are confident and persevere with their dreams, they can achieve them. [     ]
A.
that
B.
what if
C.
that if
D.
which
【单选题】下列关系中正确的个数为(  ) ①0∈{0}   ②??{0}    ③{0,1}?{(0,1)}.
A.
1
B.
2
C.
3
D.
0
【单选题】____ in a dark room, the little girl was so frightened as to cry loudly.
A.
Leaving lonely
B.
Left alone
C.
Being left alone
D.
To be left lonely
【单选题】下列关系中,正确的个数为 1 ; 2 ; 30∈N * ; 4{-5} Z.
A.
1
B.
2
C.
3
D.
4
【单选题】下列关系中正确的个数为 ① ∈R;② Q;③|-3| N*;④| |∈Q; [     ]
A.
1个
B.
2个
C.
3个
D.
4个
【单选题】下列关系中,正确的个数为 ( ) 1 2 3 4
A.
1
B.
2
C.
3
D.
4
【单选题】In 'The little girl is left alone in the house, weeping bitterly' the italicized part is the ______ of the sentence.
A.
indirect object
B.
adverbial
C.
direct object
D.
object complement
【多选题】头脑风暴法的原则包括()
A.
自由思维
B.
延迟评价
C.
借力想象
D.
以量求质
【单选题】下列关系中正确的个数为 ①0∈0; ② {0}; ③{0,1} {0,1}; ④{a,b}={b,a} [     ]
A.
1
B.
2
C.
3
D.
4
【单选题】下列关系中,正确的个数为       (     ) ① ② ③ ④
A.
1
B.
2
C.
3
D.
4
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