《素问·生气通天论》所言"烦劳则张"是指()
A.烦劳则阳气亢越
B.烦劳则皮肤松弛
C.烦劳则阳气外泄
D.烦劳则四肢懈堕
E.烦劳则头痛如裂
参考答案:A
有关竞争性抑制剂的论述,错误的是
A.结构与底物相似
B.与酶的活性中心相结合
C.与酶的结合是可逆的
D.抑制程度只与抑制剂的浓度有关
E.该抑制不能解除
He is always working______he can.
A.as hardly as
B.as hard as
C.so hardly as
D.so hard as