题目内容

What did Rowena do first?

A. She asked the baby’s mother if she could help.
B. She sat down and put the baby on her leg.
C. She gave the baby a drink.

查看答案

搜索结果不匹配？点我反馈

更多问题

Why would Rowena encourage more people to learn first aid?

A. You never know when you might need it.
B. It looks good on your
C. It’s interesting.

Choose the correct words to complete the sentences.1. I was sitting at home when (suddenly / sudden) the telephone rang.2. Greg is ill today, but (hopefully / hopeful) he’ll feel better tomorrow.3. (Unfortunately / Fortunately) I can speak French, so traveling around Paris isn’t a problem for me.4. Her mother made a (remarkably / remarkable) recovery.5. I really think we should (encourage / courage) more young people to do volunteer work.6. Health insurance will be our top (prior / priority).

若用8位0，1表示一个二进制数，其中1位即最高位为符号位，其余7位为数值位。十进制数15的原码、反码和补码表示，正确的是_____。

A. 10001111，11110000，11110001
B. 00001111，00001111，00001111
C. 00001111，01110000，01110001
D. 00001111，01110001，01110000

若用8位0，1表示一个二进制数，其中1位即最高位为符号位，其余7位为数值位。十进制数（-18）的原码、反码和补码表示，正确的是_____。

A. 10010010，11101101，11101110
B. 10010010，01101101，01101110
C. 10010010，11101110，11101101
D. 00010010，01101101，01101110