屠呦呦和她的团队从《肘后备急方》等中医药古典文献中获得灵感，引入西医炼药技法，用低沸
题型：单项选择题
问题：
屠呦呦和她的团队从《肘后备急方》等中医药古典文献中获得灵感，引入西医炼药技法，用低沸点的乙醚，经过数百次实验成功找到了青嵩素制取方法。这说明①发展的实质是“取其精华，去其糟粕”②肯定旧事物中积极的因素是新事物存在和发展的基础③理论指导下的实践创新是社会发展和变革的先导④事物间的相互联系、相互作用构成了事物的变化和发展（）
A、①④
B、②③
C、②④
D、③④
题型：单项选择题
阅读理解。
1. Oliver is unhappy because _____.
A. Emma doesn't answer his question
B. he has a problem during the adventure holiday
C. he doesn't like the adventure
D. his parents asks him to leave the centre
2. The girls in the group make o1iver unhappy by _____.
A. laughing at him all the time
B. asking him to leave the centre
C. calling him bad names
D. regarding him as a girl instead of a boy
3. Which of the following is TRUE to the passage?
A. Emma advises Oliver to teach the girls a lesson.
B. Oliver solves his problem by himself
C. Oliver likes one of the girls and they laugh at him.
D. Emma advises o1ivet to share his feelings with one of the girls.