在加热条件下,6g碳跟足量浓H2SO4反应,把反应后生成的气体通入足量NaOH溶液中,溶液的质量增加[ ]
A.22 g
B.64 g
C.86 g
D.108 g
答案:C
Not only I but also Jane and Mary ____ tired of having one examination after another.[ ]
A. is
B. are
C. am
D. be
可转换公司债的利率应略高于银行同期存款的利率水平。()