Read the whole article after ________.
[A] you have got all the information about the problem
[B] you understand the title
[C] you have read one paragraph after another
[D] you are clear about what to be discussed
第5題
A.電平觸發(fā)和邊沿觸發(fā)
B.高電平觸發(fā)和低電平觸發(fā)
C.上升沿觸發(fā)和下降沿觸發(fā)
D.輸入觸發(fā)和時(shí)鐘觸發(fā)
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