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问题 选择题
—Grandpa is getting old.
—               .

A. So she does.
B. So is she.
C. so he is.
D. So does she.
答案

答案：C

选择题

— _______________ does your family like to do?

— My family likes to have fun together.[ ]

A. How

B. What

C. When
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单项选择题

对于具有串联型分支结构的程序，如果有七个判断语句串联，则使用正交实验设计法，至少需要的测试用例数应为______。

A．23

B．24

C．25

D．27
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