问题
单项选择题
科学研究立足于文献资料和（）
A.经验事实
B.科学理论
C.大胆假设
D.科学猜测
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
科学研究立足于文献资料和（）
A.经验事实
B.科学理论
C.大胆假设
D.科学猜测
参考答案：A
| 补全对话。 | |
B: Hello. This is Mary. May I speak to John. please? A: 1__________ B: Hi, John. How are you? A: Fine, thanks. And you? B: I'm fine, Thank you. John. I need some help. 2__________ A: Sure. 3__________ B: 4__________ Can you mend it? A: Certainly. But not today. 5__________ B: OK. Thanks a lot. See you then. |
