2. 外语
  3. Scientists have developed glass fibers as thin as human hair which are designed to carry light signals.

Scientists have developed glass fibers as thin as human hair which are designed to carry light signals.

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问题 Scientists have developed glass fibers as thin as human hair which are designed to carry light signals.
选项 A、科学家发展出一种玻璃纤维，轻得象人的头发丝一样，可以用来设计轻型的信号装置。
B、科学家制造出一种玻璃纤维，比人的头发丝还细，这种设计是用来传递光信号的
C、科学家开发出象人的头发一样细的玻璃纤维来传输光信号。
D、科学家研制出跟人的头发丝似的玻璃纤维，用在光导信号的设计上。
答案C
解析
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