库血保存时间不超过（）
A.3天
B.1周
C.3周
D.4周
E.5周
参考答案：C
解析：目前常用抗凝剂CPD和ACD抗凝血可保存21天。
I sing when I feel good. When I sing my most favorite songs, 1.
I feel even better. Sometimes when I am listening to music 2.
and to the song words, I feel that it is specially written for me. 3.
A good song always makes me feeling something. They 4.
help me get through with the day. I also like reading. I used 5.
to avoiding poetry until an e-pal told me that I should recite 6.
poems and not to look up the meaning of the words. 7.
At the beginning I felt quite strange. Now I always lock the 8.
door. Read aloud gives you a good feeling when you are sad. 9.
When a poem is finished , I close the book and my sad is gone. 10.
在社会药店，应由执业药师指导购买、销售和使用的药品是
A．申类非处方药
B．乙类非处方药
C．口服制剂
D．外用制剂
E．复方制剂
