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【单选题】
已知二元一次方程组 的解 ,则 的值是( )A.
1
B.
-2
C.
3
D.
2
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【简答题】If you are traveling _ the customs are really foreign to your own，please do as the Romans do.
【单选题】上消化道出血表现为一时性眩晕、口渴、心烦、少尿,提示出血量为
A.
小于300毫升
B.
400-500毫升
C.
500-700毫升
D.
500-1000毫升
E.
大于2000毫升
【单选题】上消化道出血表现为一时性眩晕、口渴、心烦、少尿,提示出血量为:
A.
少于300毫升
B.
400-500毫升
C.
500-700毫升
D.
800-1000毫升
E.
超过2000毫升
【单选题】If you are traveling _____ the customs are really foreign to your own, please do as the Romans do ? [ ]
A.
in which
B.
what
C.
when
D.
where
【单选题】If you are travelling _______the customs are really foreign to your own, please do as the Romans do.
A.
in which
B.
what
C.
when
D.
where
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