要准确量取要准确量取要准确量取要准确量取25mL的稀盐酸,可用的仪器是()
A.25ml移液管
B.25ml量筒
C.25ml酸式滴定管
D.25ml碱式滴定管
参考答案:A, C
按课文内容填空,一空一词。
1. We're using a new textbook and Ms Shen's method of teaching is ______ _______ ______ ______ the
teachers at my Junior High School.
2. I don't think I _______ _______ _______ in Ms Shen's class.
3. However, there are some things _______ ________ _______ ________ ______ _______.
4. For example, he or she must plan his or her lessons carefully and must explain things clearly. _____
______, students will have problems.
5. I _____ ______ _______ ________ ______with my class to the zoo in Beijing.
患者疼痛剧烈,缓解疼痛应用
A.休息
B.吸氧
C.吗啡
D.硝酸甘油
E.地西泮