In the first sentence," about" it similar in meaning to()
A. around
B. only
C. at least
D. nearly
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34()
A. watch
B. notice
C. look
D. see
30()
A. someone
B. a person
C. himself
D. him
丙型肝炎病毒感染慢性化的原因不包括
A. 病毒基因组中编码包膜糖蛋白E2最易发生变异
B. 合并丁型肝炎病毒感染
C. 病毒逃逸机体免疫攻击
D. 病毒可感染免疫细胞
E. 机体抗HCV特异性免疫功能相对低下
24()
A. look for
B. search
C. find out
D. return to