与十进制数254等值的二进制数是A.11111110 B.11101111 C.11

题型:单项选择题

问题:

与十进制数254等值的二进制数是

A.11111110

B.11101111

C.11111011

D.11101110

考点:计算机等级考试B笔试一级B笔试
题型:单项选择题

Saturday, June 16th

In the morning, we went camping in Green Natural Park. We were happy because it was a sunny day. We were looking forward to a wonderful two-day holiday. On the way, we kept singing and making jokes.

However, in the afternoon, when we finished our picnic at one o’clock, it was dark and windy. Soon, there was a shower(阵雨). Unluckily, none(没有人) of us brought an umbrella. We ran about but we could find no place to hide.

Twenty minutes passed and it was still raining. There were hours to go before we reached the campsite (野营地). It was even worse that our small compass (指南针) showed that we went to the wrong way. We lost our way!

We had to make a quick decision(决定)because it was raining heavily. Chris said we could put up a tent to hide in, so Mary and Tom helped to put up the tent. Chris and I tried to make a fire to keep us warm. But we weren’t able to light(点燃) the fire, because everything was wet. We dried ourselves, chatted and waited inside the tent. At about five o’clock, it stopped raining. We decided to give up (放弃)the camping trip because all of us were very tired.

This camping trip may not be successful (成功的) but we know each other better. And the most important thing I’ve learned from this camping trip is team spirit(合作精神).

Answer the following questions with No More Than 4 Words

小题1:Where did they go camping?

_____________________________________________________________________________

小题2: When did they finish their picnic?

_____________________________________________________________________________

小题3:Why weren’t they able to light(点燃) the fire?

_____________________________________________________________________________

小题4:How long did the rain last(持续)?

_____________________________________________________________________________

小题5:What’s the most important thing that the writer has learned from the camping trip?

_____________________________________________________________________________

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B、65

C、75

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