Many boys enjoy _______ football, basketball or baseball

Which do you think is ________, health or wealth？

CPU、存储器、I/O设备是通过______连接起来的。

_______________will not continue if an ongoing operation is changed or deletedA、

单片机是将_____ 、______ 、I/O口集成到一块芯片上。

29．__________ when you are on the bus or bike．

Which do you think is _________________important, health or wealth?

And they can ______their passports______，making leaving or “escaping” virtually impossible.

Duty is an act or a course of action that people __________you to take by social customs, law or religion.

I/O接口位于______。

I／O接口位于______。

某计算机的I／O设备采用异步串行传送方式传送字符信息，字符信息的格式为：一位起始位、七位数据位、一位检验位、一位停止位。若要求每秒钟传送480个字符，那么该I／O设备的数据传送速率应为________bps(位／秒)。