问题
单项选择题
二进制的1011转换成十进制数是（）。
A．13
B．14
C．12
D．11
答案
参考答案：D
解析：
101lB=1*23+1*21+1*20=11D
搜题请搜索小程序“爱下问搜题”
二进制的1011转换成十进制数是（）。
A．13
B．14
C．12
D．11
参考答案：D
解析：
101lB=1*23+1*21+1*20=11D
| 任务型阅读 (每空一词)。 | |||||||||||||||
| Animals are people's friends. Buy many wild animals are facing the danger of dying out, because the environment that they are living in has changed greatly. For example, their living area has become smaller and smaller because of the development of cities and the increasing of population (人口). They have no enough room to live in or enough food to eat. At the same time, men are trying their best to kill the animals just for getting their fur and skin, teeth and meat. People should realize how serious it is and something should be done to protect the animals. We should build some reserves, so that animals can live freely. And people should not be allowed to kill the endangered animals or eat their meat. We should do something to make our world cleaner. Fresh air, clean water and green grass are all important for animals. The death of the endangered animals will bring a disaster to human beings (人类). | |||||||||||||||
Research Report
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