A:1/2和7/16
B:1/2和5/16
C:l/4和5/16
D:1/4和7/I6
—No, I don't like sports. I often play ______ piano in my free time.
-- What do you think of Bill?
-- I used to think that he ____ (be) an honest boy.
在底面积为6×10﹣2m2,重为4N的玻璃杯中装有0.62kg的水,水面高度为0.1m。(g取10N/kg)