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【判断题】
在89C51中，为使准双向的I/O口工作在输入方式，必须保证它被事先预置为1。（）A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】When you reason from specific instances in a persuasive speech, you should _____.
A.
Reinforce your argument with statistics and testimony.
B.
Include at least one extended example among your specific instances.
C.
Avoid drawing conclusions from too few instances.
D.
All of the above.
E.
A and C only.
【单选题】When you reason from specific instances in a persuasive speech, you should
A.
reinforce your argument with statistics and testimony.
B.
include at least one extended example among your specific instances.
C.
avoid drawing conclusions from too few instances.
D.
all of the above.
E.
a and c only.
【单选题】When you ________, you progress from a number of particular facts to a general conclusion.
A.
reason from principles
B.
reason from instances
C.
make causal reasoning
D.
make ogical reasoning
【简答题】针叶管胞同时起___和___的作用。
【多选题】What need to be put down when you are taking a message through the phone?
A.
The reason of calling.
B.
The time and date of the call.
C.
What needs being done after the call.
D.
Where the call is from.
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