2. 考研
  3. The early typewriters produced letters quickly and neatly: the typists, ______couldn’t see their work on their machine.

The early typewriters produced letters quickly and neatly: the typists, ______couldn’t see their work on their machine.

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问题 The early typewriters produced letters quickly and neatly: the typists, ______couldn’t see their work on their machine.
选项 A、however
B、therefore
C、yet
D、although
答案A
解析 早期的打字机打起字来又快捷又整齐，然而打字员们不能在机器上看到他们打的字。however adv．然而，不过，无论如何；therefore adv．因此，因为，由此可得；yet conj．然而，但是；although conj.尽管，虽然，然而，但是。判断句意可知，此处应该为转折关系。A、C、D都可以表示转折，但是只有however的词性符合要求。故答案为A。
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