单项选择题
When we say stockholders of a firm can vote with their feet，we mean stockholders（）.
A．express their displeasure with management by votingB．sell their stocksC．are allowed to vote by tap on the floorD．all of the above
单项选择题 受扭构件中，抗扭纵筋应( )。 A．在四角放置 B．在截面左右两侧放置 C．沿截面周边对称放置
单项选择题 ——Father is very busy these days.He has （）to do.——Really？
单项选择题 There is little milk in the glass，（）？
