半抗原具有的特性是（）。 A.大分子的蛋白质 B.具有免疫原性和_爱下问搜题

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问题单项选择题 A1/A2型题

半抗原具有的特性是（）。

A.大分子的蛋白质

B.具有免疫原性和免疫反应性

C.具有免疫反应性，无免疫原性

D.具有免疫原性，无免疫反应性

E.本身可刺激机体发生免疫应答

答案

参考答案：C

填空题

根据短文内容，用方框中所给词填空。

always quiet name listen friend practice good

     I am now fifteen years old. I remembered my time at school well. Some of it was  1 but some of it was
bad.
     I'll never forget my first day at school. I remember while the head teacher was introducing himself,
a girl next to me started asking me about'my shoes! I wanted to  2 to the head teacher but I didn't want to be
rude to my new  3 . So, I told her about my shoes. Suddenly the head teacher looked at me with an angry face.
"Be  4 when I'm speaking! Go and sit in the comer."
     I remembered feeling so stupid. I remember my first teacher's  5 was Mrs. Smith. She was really pretty
and had a lovely smile. She had a soft voice and  6 wore the same sweater. She seemed so nice.
     Sports day was the best day of the year! I used to  7 for the running race and one year I actually won!

选择题

—Does Brad go fishing on foot or by bike?

—Neither. ______ his car. [ ]

A. By

B. On

C. In

D. With