听力原文:W: Are you sure that you can do this job?
M: I have all the tools for it, but I'm still not sure if I can pull it off.
Q: What does the man say about the job?
(14)
A.He thinks he can put off the job.
B.He thinks he can do it successfully.
C.He is not certain if he can accomplish it.
D.He is not sure if he can do it independently.
第3题
A.半抗原指仅有抗原性而无免疫原性的物质
B.半抗原指抗原性和免疫原性较弱的抗原
C.半抗原与载体结合后可具有免疫原性
D.多肽、甾体激素、核苷、某些药物等小分子物质均属于半抗原
E.半抗原单独作用时无免疫原性
第5题
半抗原的载体包括
A、脂类,蛋白质,多糖
B、类脂质,清蛋白,人工合成的多肽
C、清蛋白,球蛋白,人工合成的多肽聚合物
D、多糖,清蛋白,球蛋白
E、类脂质,球蛋白,大分子聚合物
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