痰浊头痛的特征是（）
A.头痛如裹
B.头痛如裂
C.头痛且空
D.头痛且晕
E.头痛昏蒙
参考答案：E
已知f（3x）=4xlog23+233，则f（2）+f（4）+f（8）+…+f（28）的值等于______．
Kate and I ______ doing _______ homework now. [ ]
A. am, their
B. are, their
C. is, our
D. are, our
