问题
单项选择题 A型题
当部分激动剂与未达Emax的激动剂合用时，前者表现为（）
A.激动作用
B.相加作用
C.拮抗作用
D.无影响
E.相反作用
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
当部分激动剂与未达Emax的激动剂合用时，前者表现为（）
A.激动作用
B.相加作用
C.拮抗作用
D.无影响
E.相反作用
参考答案：A
| 阅读理解。 | ||
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| 根据表格内容，选择正确答案。 | ||
| 1. When is Emma's birthday? | ||
| A. Saturday. B. Thursday. C. Sunday. | ||
| 2. Where is the birthday party? | ||
| A. In Children's Centre. B. In Emma's house. C. In Children's Club. | ||
| 3. If Jane wants to be a teacher in Children's Center, she must be good at _____. | ||
| A. music B. sports and math C. A and B | ||
| 4. How long should the teacher in Children's Center have for teaching experience? | ||
| A. One year. B. less than two years. C. more than two years. | ||
| 5. What number can you call if you want to be a teacher? | ||
| A. 629- 8796. B. 569- 0965. C. We don't know. |
