常用软件Excel属于（ ）。

单项选择题A. I’m going shopping.B.- Do you mind if I come with youA: (). You can carry my bag for me.

A. Thank you
B. It’s my pleasure
C. By the way
D. No, of course not
E. Never mind

单项选择题A: Thank you for looking after the eat for me.B: (). I love cats.

A. Thank you
B. It’s my pleasure
C. By the way
D. No, of course not
E. Never mind

单项选择题A. What a beautiful dress!B: (). I just got it yesterday.

A. Thank you
B. It’s my pleasure
C. By the way
D. No, of course not
E. Never mind

单项选择题A: Would you sign the register please, SirB: Sure.() ,does my morn have a private bathA: Certainly. Every room in this hotel has a private bath.

A. Thank you
B. It’s my pleasure
C. By the way
D. No, of course not
E. Never mind

单项选择题A: I’m terribly sorry that I broke your vase.B: ().

A. Thank you
B. It’s my pleasure
C. By the way
D. No, of course not
E. Never mind

单项选择题赵老师从因特网上找到了一份对自己有用的文字材料，他用复制、粘贴命令把它放到Word中，发现里面有大量的无用空格，他打算把这些空格全部去掉，下列方法中最适当的是（ ）。

单项选择题A．This tour is the chance of lifetime．B．It goes all over North America and South America．C．It looks like you’re dreaming about something．D．You’ll have to quit school and your job at the store．E．My agent wants me to go on a tour with Art’s Jazz Band．F．Have you told anyone about this yetG．It would be a great opportunity!

单项选择题为自己的windows系统计算机设置安全防范措施，恰当的是（ ）。

单项选择题用Excel处理大量学生成绩时，若想对不及格的成绩用醒目的方式表示(如用红色表示)，可用（ ）命令最为方便。

单项选择题计算机网络最突出的优点是（ ）。