临床上最为常用的血液制品是（）.
A．洗涤红细胞
B．红细胞悬液（添加剂红细胞）
C．浓缩白（粒）细胞
D．普通冰冻血浆
E．冷沉淀
参考答案：C
根据句意和括号内所给单词的适当形式写出单词。
1. The light is red. You must wait. It's _______ (danger) to cross the road.
2. What's the _______ (mean) of this word, do you know?
3. Jenny is very kind. She often shares her (toy) with her friends.
4. My room is not as big as my _______ (brother).
5. Your sister is too young to dress _______ (she). Please help her, Ann.
丙类传染病有（）
A.百日咳
B.血吸虫病
C.包虫病
D.流行性脑脊髓膜炎
E.鼠疫
