在以下定义的标识符中，选择定义正确的一个标识符。（）
A. 34net
B. a1-b1
C. a3_$_2
D. a*b_net
查看答案
下列标识符中，_________是合法的标识符。()
A. Shift$0
B. 34net
C. wire
D. Not@Ack_0
Listen to the dialoge and select the best choices.The relationship between the two speakers is probably________.
A. teacher and student
B. seller and customer
C. old friends
D. old classmates
Lin Da met Prof. Green_______.
A. by chance
B. as arranged
C. in a shop
D. at the wedding ceremony
It can be learned from the dialogue that_____________.
A. Lin Da and Prof. Green feel shocked to meet each other
B. Lin Da is a bit shy about Prof. Green's remarks about her
C. Lin Da and Prof. Green haven't seen each other for quite some
D. Prof. Green will buy an expensive present for Lin Da
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