目前各国的标准不同且互不兼容,未来DSRC的标准走向还有待观察。
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根据句意,选择恰当的动词形式补全句子。The boy a picture now.
A. draws
B. is drawing
C. are drawing
根据句意,选择恰当的动词形式补全句子Listen1 Some girls in the classroom.
A. is singing
B. sings
C. are singing
根据句意,选择恰当的动词形式补全句子Look, theyan English lesson.
A. are having
B. have
C. has
根据句意,选择恰当的动词形式补全句子--What is our granddaughter doing?--She to music.
A. listens
B. listen
C. is listening