----     does the baby mouse weigh?

  ----About 20grams.

  A. How much    B. How many   C. How     D. What

 

【答案】

B

【解析】疑問詞的用法。How much提問不可數(shù)名詞的數(shù)量即后跟不可數(shù)名詞，還可提問“價格”；how many提問可數(shù)名詞的數(shù)量即后跟可數(shù)名詞復(fù)數(shù)；how 意思是“怎樣”；what意思是“什么”。根據(jù)答句“about 20 grams”意思是"大約20克"，“grams”是可數(shù)名詞復(fù)數(shù)可推斷提問多少克，故選B。

 

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