—_____ is that little boy?
—It's Tom. [ ]
A. Who
B. What
C. Where
答案：A
—Do you think the girl is _____thin?
—No, I don't think so.
A. a few
B. a kind of
C. a little bit
D. a bit of
若x2+3x+5=7，则代数式3x2+9x-11的值为（ ）
A．5
B．-6
C．7
D．-5
