如图，将试管逐渐移到竖直位置，水对管底的压强将
A．变大
B．变小
C．不变
D．无法确定
答案：A
There are twelve ________ in a year. [ ]
A. months
B. seasons (季节)
C. days
D. weeks (周)
Nowadays,people usually think if you enter a key university,you are your parents'________________．[ ]
A．pride
B．luck
C．value
D．cheer
