既能补肾阳，又能益肾阴，为平补阴阳之良药的药物是( )
A．补骨脂
B．锁阳
C．紫河车
D．菟丝子
E．沙苑子
参考答案：D
—I didn’t do well in this English examination. How about you?
—I did ________ you.
A．not better than
B．no worse than
C．as well as
D．no better than
温度为20°C时，充入电缆气体的含水量不得超过（）。
A.1.5g/m³
B.1.6g/m³
C.1.7g/m³
D.1.8g/m³
