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【单选题】
以下用户标识符中,合法的是( )。A.
int
B.
nit
C.
123
D.
a+b
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举一反三
【单选题】( ) ——- Is he your brother ? ——— No,_________. A. he isn't B. she isn't C. he is
A.
he isn't
B.
she isn't
C.
he is
【单选题】—Your father isn't a doctor, is he? —_____. He teaches Chinese in a middle school. [ ]
A.
No, he isn't
B.
Yes, he is
C.
Yes, he isn't
D.
No, he is
【简答题】---Is he your uncle, Jim? ---Yes, ___________. He is a great cook. A he is B he isn’t C it is D it isn’t
【单选题】—Isn’t he your brother? -- .
A.
No, hedoesn’t
B.
Yes, he isn’t
C.
No, he isn’t
D.
Yes, he is
【简答题】–Is he your brother? -No, _________. A, she isn’t B. he isn’t C. she is D. he is
【简答题】. 环境分析有哪些主要方法?如何应用?
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