The idea of fish being able to produce electricity strong enough to light a lamp
题型：不详难度：来源：
The idea of fish being able to produce electricity strong enough to light a lamp is almost unbelievable, _____ several kinds of fish are really able to do this.| A．therefore | B．and | C．then | D．but |
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答案
| D |
解析
| 连词辨析。 A.因此B.和，并且 C.那么，然后；D.但是。句意：鱼能够产生的电流足够点亮一盏灯的想法，是令人难以置信的，但是有几种与确实能够做到这一点。故选D。 |
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