问题
单项选择题 A1/A2型题
与非特异性免疫相比较，特异性免疫的特点是（）
A.无免疫记忆
B.作用时间短
C.作用时效在96小时内
D.免疫细胞无须增殖分化
E.细胞组成有T细胞、B细胞和抗原提呈细胞
答案
参考答案：E
搜题请搜索小程序“爱下问搜题”
与非特异性免疫相比较，特异性免疫的特点是（）
A.无免疫记忆
B.作用时间短
C.作用时效在96小时内
D.免疫细胞无须增殖分化
E.细胞组成有T细胞、B细胞和抗原提呈细胞
参考答案：E
| 请用下面方框内所给的词或短语，完成下列句子，每项只能用一次。 | |
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| 1. My sister started _____ last night. She should go to see a doctor. 2. Wang Lin won the prize for _____. She sang a cute pop song. 3. In some ways they look _____. 4. On the next _____, I don't want to go for a trip 5. _____ for service, most people think that this restaurant is really great. |