2. 外语
  3. The writer chiefly talks about ______. The "problem" in the fourth paragraph refers to the fact that ______.

The writer chiefly talks about ______. The "problem" in the fourth paragraph refers to the fact that ______.

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问题 The writer chiefly talks about ______.
The "problem" in the fourth paragraph refers to the fact that ______.
选项 A、bandwidth isn’t big enough to send complex medical pictures
B、the second-generation Internet has not become popular yet
C、communication satellites can only deal with short-term needs
D、there is not enough equipment for spreading the medical care
答案A
解析 细节题。题干意为“第四段的problem指的是什么?”根据第四段第二句话Bandwidth is the limiting factor for  sending complex medical pictures around the world—CT photos being one of the biggest bandwidth users. 可知答案为A。
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