问题
单项选择题
( )为前体药物，只有进入体内经过活化后才能发挥作用。
A．美法仑
B．环磷酰胺
C．卡莫司汀
D．巯嘌呤
E．氟尿嘧啶
答案
参考答案：B
解析：[知识点] 烷化剂
搜题请搜索小程序“爱下问搜题”
( )为前体药物，只有进入体内经过活化后才能发挥作用。
A．美法仑
B．环磷酰胺
C．卡莫司汀
D．巯嘌呤
E．氟尿嘧啶
参考答案：B
解析：[知识点] 烷化剂
| 完形填空。 |
| There are many holidays all around a year. But do you know there l two special days for mothers and fathers? Yes, they are Mother's Day and Father's Day. 2 Day is on the second Sunday 3 May. On that day, mothers can get greeting cards and gifts from their husbands and 4 . But for most mothers the 5 gift is a day of rest. Some families 6 mothers to a restaurant 7 dinner. In some 8 the husband and children cook meals a whole day and mum is free 9 the kitchen. 10 are also good gifts for mothers. Father's Day is alike. It's on the third Sunday in June. |
| ( ) l. A. am ( ) 2. A. Mother's ( ) 3. A. at ( ) 4. A. child ( ) 5. A. good ( ) 6. A. took ( ) 7. A. for ( ) 8. A. family ( ) 9. A. from ( ) l0. A. Flower | B. is B. Father's B. in B. childs B. best B. take B. from B. families B. to B. Flowers | C. are C. Son's C. from C. children C. well C. takes C. at C. familys C. at C. The flower |