单项选择题

How many people use the Internet in South Africa

A. 34 million.

B. 12 million.
C. 1.2 million.
D. 16 million.
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单项选择题
What does the gathering near Washington DC mainly discuss
A. How modern technology damages human health.
B. How mobile phone affects human life.
C. How mobile technology affects healthcare.
D. How mHealth Summit functions.
单项选择题
A
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