色谱法是一种分离手段,是利用被分离混合物中各组分在固定相和流动相中的()不同而实现分离的方法。
A、浓度
B、反应速度
C、作用力
D、作用机理
参考答案:A
Jane is a nice girl. She lives in London. She studies(学习) in a middle school. She gets up at six every day. She likes reading English. She’s a bright girl. She draws pictures well. After school, she often reads newspapers with her grandmother. At seven o’clock in the evening. Jane has supper(晚饭) at home. Every day at eight she does her homework and goes to bed at nine.
根据短文内容,选择正确答案(10分)
小题1:Jane lives in______.
A、England. B、New York C、Paris
小题2:What does Jane like to do?________.
A、She likes reading story-books.
B、She likes drawing big pictures
C、She likes learning English.
小题3:She is a_________ girl.
A、nice B、clever C、nice and bright
小题4:What does she often do after school? ________.
A、She draws pictures.
B、She has supper
C、She does some reading with her grandma
小题5:What time does she go to bed? ________.
A、8∶00 B、9∶00 C、8∶35
后金的辅政四大贝勒分别是哪四个?