叶片下表面密被白色腺点和灰白色绒毛的药材是（）
A.侧柏叶
B.枸骨叶
C.艾叶
D.罗布麻叶
E.大青叶
参考答案：C
With the price of pork and eggs quickly, CPI has become a hot phrase among Chinese．
A．climbing
B．climbed
C．to climb
D．climb
.Few people paid full attention to their health conditions _____ they were seriously ill.
A．when
B．if
C．until
D．before
