问题 单项选择题

在微型计算机中,存储容量为2MB等价于______。

A.2×1024B

B.2×1024×1024B

C.2×1000B

D.2×1000x 1000B

答案

参考答案:B

阅读理解

阅读理解。

                                              Group Helps Others to Build Houses

     TEPETITAN, EL SALVADOR- Evinor Mira is only sixteen years old, but he is working as hard as an

adult man to help his family get a good house. Evinor lives with his mother and his little brother and sister in

Tepetitan, EL Salvador. His father is dead, and the family is very poor. Their house is a small one of mud

(泥土) and sticks, so Evinor is working with an organization called Habitat for Humanity to build a new home.

     Habitat for Humanity helps people who need houses but do not have much money. Each family buys the

house through monthly payments (每月付款). Their payments help build more houses because banks can then

lend money to other families. Habitat for Humanity volunteers help to build the house, but the families must do

a lot of the work themselves.

     Every morning, Evinor begins at 7:00. He and the volunteer workers from Habitat carry boards (木板),

pound nails (敲钉子), and pour concrete (混凝土) all day, six days a week. The other workers can go home

and rest at 4:00 p.m., but Evinor's day isn't over. He rides on a bus for forty minutes to go to school in another

town. He is in high school and attends classes for four hours every evening. At 9:00 p.m. he has to walk two

and a half hours to get home because there aren't any buses so late at night. Around 11:30 p.m. he arrives

home and does his homework. On Sundays, Evinor works with the Habitat organization to help other families

get houses, too.

     Evinor does not have the easy life of many teenagers, but he doesn't mind working so hard. He is proud

that he can help his own family and others in his community (社区) to have better lives.

1. _______  people living with Evinor in the small house in Tepetitan now.

2. Habitat for Humanity helps poor people to _______.

3. People who need houses can _______ banks.

4. Evinor has to go to school in the evening because _______.

5. Evinor does his homework after _______.

单项选择题