问题
单项选择题
计算机的输出设备主要有（）、打印机、绘图仪等。
A.显示器
B.键盘
C.鼠标
D.光盘
答案
参考答案：A
解析：显示器属于计算机的主要输出设备，键盘和鼠标都属于计算机的输入设备。
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计算机的输出设备主要有（）、打印机、绘图仪等。
A.显示器
B.键盘
C.鼠标
D.光盘
参考答案：A
解析：显示器属于计算机的主要输出设备，键盘和鼠标都属于计算机的输入设备。
We all know that it is __1__to keep healthy. But not all people know ___2__to keep healthy. After five days’ hard work, we need to have a good rest at weekends. But it seems that some don’t know how to spend weekends in the right way. They enjoy ___3__ cards at night and don’t go to bed until midnight. Some gamble (赌博) all night. They forget that to get___4__sleep is good for health. Some never get up early in the __5___ and take some exercise. It is true that doing exercise is very important for us to keep ___6__. Some smoke（抽烟）___7________. Some drink too much wine（酒）. ____8___ too much is harmful (有害) to the body. Some eat too much rich food and get fatter and fatter. If you are much too fat, you may always ____9___ tired. Vegetables are good to the body. But some don’t like eating vegetables. _____10___ is also very good to body. As a saying (谚语) goes, "An apple every day keeps the doctor away." So don’t forget to eat some fruit.
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