女贞子中的齐墩果酸结构属于达玛烷型四环三萜类。
参考答案：错
I’m going to the supermarket this afternoon. Do you have anything __________?
A. for buying B. bought C. buying D to be bought
重症急性胰腺炎的实验室检查特异表现是（）。
A.血糖下降
B.血钙下降
C.血脂肪酶早期升高
D.尿脂肪酶升高
E.血清淀粉酶持续升高
