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I (remember) clearly (to return) the book to him last Wednesday, but now he (says) that (I
I (remember) clearly (to return) the book to him last Wednesday, but now he (says) that (I didn' t).
A.remember
B.return
C.says
D.I didn't
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)
I (remember) clearly (to return) the book to him last Wednesday, but now he (says) that (I didn' t).
A.remember
B.return
C.says
D.I didn't
第1题
A型人参皂苷的苷元是
A.齐墩果酸
B.20(S)-原人参二醇
C.20(S)-原人参三醇
D.人参二醇
E.20(S)-原人参二醇
第2题
A型人参皂苷的苷元是
A.人参二醇
B.20(S)~原人参二醇
C.齐墩果酸
D.人参三醇
E.20(S)-原人参三醇
第3题
人参皂苷A型的真正苷元是
A.20(S)-原人参二醇
B.20(S)-原人参三醇
C.人参二醇
D.人参三醇
E.齐墩果酸
第4题
A型人参皂苷酸水解的产物是
A.齐墩果酸
B.20(S)-原人参二醇
C.20(S)-原人参三醇
D.人参二醇
E.20(S)-原人参二醇
第7题
A.20(S)-原人参二醇
B.20(S)-原人参三醇
C.人参二醇
D.人参三醇
E.齐墩果酸
A型人参皂苷经酸水解,可得
第8题
A.20(S)-原人参二醇
B.20(S)-原人参三醇
C.人参二醇
D.人参三醇
E.齐墩果酸
A型人参皂苷经酸水解,可得
第9题
人参皂苷A型的苷元是
A、人参二醇
B、人参三醇
C、齐墩果酸
D、20(S)-原人参二醇
E、20(S)-原人参三醇
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