问题
单项选择题
超声速飞机的飞行马赫数（）
A.大于1
B.等于1
C.小于1
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
超声速飞机的飞行马赫数（）
A.大于1
B.等于1
C.小于1
参考答案：A
| 根据对话内容，选择恰当的句子补全下列对话。 | |
A: We have to meet the others at 8:30 at the reserve (自然保护区), don't we? B: 1_______ A: Do you know how to get there? B: 2_______ It will take us about two hours to get there by bus. A: 3_______ B: It's an area that protects lots of different animals. A: 4_______ B: I'm not really sure. I know there are many different kinds of birds there and I'm going to take my camera with me. A: 5_______ What clothes are you going to wear? B: Well, if it's wet, I will wear my strong shoes and take my raincoat with me. A: So will I. |