B. Some modern technologies have been used for improving the service.

　　C. Question Box won't be able to work if there is no electrical power.

　　D. It was impossible for a grandma to use Question Box.

　　答案及解析：

　　2. B。C选项可以根据第四段The latest version of the box uses mobile phone technology and solar panels in case the electrical power fail.判断，A选项根据第三段的第一句Question Box began two years ago in India.判断，D选项根据第五段“the idea was to make a technology that even Grandma could use”判断。

　　3. We can learn from the passage that in Uganda ______.

　　A. forty call center operators helped make Question Box known to villagers

　　B. it was very convenient for villagers to have access to Internet service

　　C. users are very interested in current events

　　D. a local technology company cooperate with Question Box

　　答案及解析：

　　3. D。 根据倒数第二段的第二句可知。

　　4. What can be inferred from the last paragraph?

　　A. All the questions asked by people are pretty funny.

　　B. Workers of Question Box know the answer to any question.

　　C. Question Box always tries to answer the questions, no matter how strange.

　　D. Those who asked questions wanted to make progress in their studies.

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