有10道是非题,要从统计上(99%的把握)判断一个被试是否因猜测因素答对,他至少应正确回答的题目数是( )
A.5道
B.6道
C.7道
D.8道
参考答案:D
---How long ____ you ____ in Singapore?
---For just the weekend. I’ll be back next Monday morning.
A.have; stayed
B.are; staying
C.did; stay
D.do; stay
--- May I a pair of pants?
--- Of course.
A. has B. have C. having