唐代,荆楚大地商业繁盛,出现了一些非官方的市镇,即( )。
A.夜市
B.大都会
C.草市
D.商镇
参考答案:C
根据句意,用括号内所给单词的适当形式填空。
1. I think _____(speak) English is more difficult than written English.
2. She is a quick _____(learn), and her English has got better day by day.
3. Be more careful! Don’t make any _____(mistake) in your writing.
4. I can't follow what you are saying. Could you please speak more _____
(slow).
5. The man laughed when he _____(realize) what had happened.
α-抗胰蛋白的主要功用是
A.运输铁B.运输铜C.能与细胞外血红蛋白结合D.是丝氨酸蛋白酶的抑制剂E.运输胆红素