一个字符的标准ASCII码码长是A．8bits B．7bits C．16bits D

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问题单项选择题

一个字符的标准ASCII码码长是

A．8bits

B．7bits

C．16bits

D．6bits

答案

参考答案：B

解析：[分析] 标准ASCII码是用7位二进制位表示的。

听力题

小题1:Among the patients that poor girl was ( terrible) ill.

小题2:The old scientist devoted all her time she had to (develop) the western parts of China.

小题3:He has decided to have a party for his wife’s _______(forty) birthday.

小题4:All the students _____________ (divide) into four groups and then they went on hiking with four teachers.

小题5:An old man was found ___________ (die) in the street yesterday.

小题6:The police believe these footprints are one of the _____________ (thief).

小题7:You have no choice but _________(work) hard if you want to enter your ideal school.

小题8:While my mother (cook)dinner ,I got home.

小题9:These comic books _______ are more or less worth reading. (it)

小题10:The more he thought of it, ________________(excite) he felt.

填空题

一个物体挂在弹簧测力计下，示数为30N，浸没在水中时，示数为20N，则物体受到的浮力大小是______N，方向是______．此时物体受______力、______力和______力的作用，它们的施力物体分别为______、______和______，物体所受合力______N．