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【判断题】
I/O数据缓冲器主要用于协调CPU与外设在速度上的差异。A.
正确
B.
错误
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参考解析：
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举一反三
【简答题】试述小组焦点访谈法的优缺点。
【单选题】— Why do you get up so early in the morning, Tracy? — I generally make it a ______ to be up by 7 to read English. [ ]
A.
plan
B.
wish
C.
secret
D.
rule
【单选题】You should get up early _______ you would catch the train.
A.
or
B.
because
C.
but
D.
so that
【单选题】– Why do you get up so early in the morning, Lingling? -- I generally make it a to be up by 7 to read English.
A.
plan
B.
wish
C.
rule
D.
secret
【简答题】静脉的结构特点有哪些？
【单选题】You'd better _____ smoking, _____ you will get ill. [ ]
A.
go on; so
B.
give up; and
C.
give up; or
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