问题 单项选择题

31-32 题基于以下题干互联网好比一个复杂多样的虚拟世界,每台互联网主机上的信息又构成一个微观虚拟世界。若在某主机上可以访问本主机的信息,则称该主机相通于自身;若主机x 能通过互联网访问主机y 的信息,则称x 相通于y。已知代号分别为甲、乙、丙、丁的四台互联网主机有如下信息:(1)甲主机相通于任一不相通与丙的主机;(2)丁主机不相通于丙;(3)丙主机相通于任一相通于甲的主机。

若丙主机不相通于自身,则以下哪项一定为真?

A.甲主机相通于乙,乙主机相通于丙。

B.若丁主机相通于乙,则乙主机相通于甲。

C.只有甲主机不相通于丙,丁主机才相通于乙。

D.丙主机不相通于丁,但相通于乙。

E.甲主机相通于丁,也相通于丙。

答案

参考答案:E

解析:【解析】(1)某主机不相通于丙→甲相通于此主机(2)丁不相通于丙(3)某主机相通于甲→丙相通于此主机由(1)(2)知,甲相通于丁。又由:丙不相通于丙,再由(1)知,甲相通于丙。

完形填空

、阅读表达 (共5小题,计10分)

阅读短文,根据要求完成下面各小题。

Recently some houses in our community have been broken into. I would like to give you some suggestions about how to prevent from stealing (盗窃).

First, let’s talk about lighting. We should turn on the outside lights at night. Inside the house, it’s a good idea to put automatic timers (自动定时器) on lights. When you are out, it will still look like someone is at home. If you live in an apartment building, make sure that there’s good lighting in the garage and in the hallways.

Next, let’s talk about locks. First of all, cheap locks are not safe. You should buy special locks to lock your doors and windows. 83 Remember to lock your doors and windows, even when you leave for just a minute. Did you know that half of the thieves break in through unlocked doors and windows?

My next suggestion is not to keep lots of money in the house. It’s wise to put your money in a bank. You should put marks on your other valuables, like television, stereos and cameras, so that the police can return them to you if they are found.

84Believe it or not, if you follow all of these suggestions above, your house will be safer.

(一)根据短文内容简要回答问题。

小题1: What does the phrase “break into” mean in Chinese?

                                                                          

小题2: How many suggestions on stopping breaking into does the writer offer in the passage?

                                                                          

(二) 将短文中划线的句子译成汉语。

小题3:_____________________________________________________________________

小题4:____________________________________________________________________

(三)请给短文拟一个适当的标题。

小题5:____________________________________________________________________

单项选择题