问题
单项选择题
下面哪条命令可用来确保文件“file1”存在（）
A.cp file1/dev/null
B.touch file1
C.create file1
D.mkfile file1
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
下面哪条命令可用来确保文件“file1”存在（）
A.cp file1/dev/null
B.touch file1
C.create file1
D.mkfile file1
参考答案：B
选择下列词汇完成下面对话。（共5小题，每小题1分）
B: Yes. I want to buy a skirt. A: This小题1:__________ please. All our skirts are in this section. How do you like the red one here? B: It looks nice, but I don't like red. It小题2:__________ very hot. A: Do you like white? There is also a white小题3:__________. B: I think that's what I want. How小题4:__________ is it? A: It's sixty-six yuan. B: How about fifty yuan? A: Hmm, 小题5:_________ you like it so much, you can take it with fifty-five yuan. That's the lowest price I can offer. B: That's good! I'll take it. |