问题 单项选择题

在配置路由器loopback接口过程中,网络管理员应为loopback接口分配一个IP地址,其掩码应该为______。

A.0.0.0.255

B.255.255.255.255

C.255.255.255.0

D.0.0.0.0

答案

参考答案:B

解析: 在配置路由器loopback接口过程中,网络管理员应为loopback接口分配一个IP地址,其掩码应该为255.255.255.255,故选B)。

阅读理解

阅读短文,选择正确答案。

     In the US, people prefer waiting for a table to sitting with people they don't know. If you are sitting at a table

with people you don't know, it is impolite to light up a cigarette without first asking if it will disturb them.

     At American restaurants and coffee shops you are usually served tap (水龙头) water before you order. You

may find the bread and butter is free, and if you order coffee, you may get a free refill.

     Most cities and towns have no rules about opening and closing times for stores or restaurants, though they

usually do make rules for bars. Especially in large cities, stores may be open 24 hours a day.

     Servings [(食物的)份] in restaurants are often large, too large for many people. If you can't finish your

meal but would like to enjoy the food later, ask your waitress or waiter for a "doggie bag". It may have a picture

of a dog on it, but everybody knows you're taking the food for yourself.

     Supper and dinner are both words for the evening meal. Some people have "Sunday dinner". This is an

especially big noon meal.

     Tips are not usually added to the check. They are not included in the price of the meal, either. A tip of about

15% is expected and you should leave it on the table when you leave. In some restaurants, a check is brought on

a plate and you put your money there. Then the waiter or waitress brings you your change.

1. In the US, people prefer to _____ rather than sit with people they don't know. [ ]

A. wait for a table

B. light up a cigarette

C. order a cup of coffee

D. ask people questions

2. What is served before you order? [ ]

A. Bread.

B. Butter.

C. Coffee.

D. Cold water.

3. What do Americans always do when servings are too large for them? [ ]

A. They take the food with a doggie bag for their dogs.

B. They leave the food on the table and go away.

C. They take the food home with a doggie bag and enjoy it later.

D. They ask the waitress or waiter to keep the food for them.

4. Sunday dinner is _____. [ ]

A. a dinner in the evening

B. a big meal at noon

C. a big supper on Sunday

D. a supper on Sunday

5. Which of the following is NOT mentioned in the passage? [ ]

A. People wouldn't like to sit with strangers at a table.

B. If you order a cup of coffee, you may get another free one.

C. A 15% tip in large cities means you are satisfied with service.

D. Servings in restaurants are too large for many people to finish.

单项选择题