2. 外语
  3. AMany pens work by capillary action in Btoo narrow tubes in Cwhich the liquid flows upward when the Dpressure inside is lowered.

AMany pens work by capillary action in Btoo narrow tubes in Cwhich the liquid flows upward when the Dpressure inside is lowered.

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问题 AMany pens work by capillary action in Btoo narrow tubes in Cwhich the liquid flows upward when the Dpressure inside is lowered.
选项 A、 
B、 
C、 
D、 
答案B
解析 Too is incorrect because the sentence does not express cause and result. Correction: very.
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0

托福（TOEFL）

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