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Carsdocauseussomehealthproblems―infactfarmoreserious

練習題3.07W

問題詳情:

Carsdocauseussomehealthproblems―infactfarmoreserious

Cars do cause us some health problems ―in fact far more serious _______ than mobile phones do.


      A.one                      B.ones                    C.it                        D.those

【回答】

B


解析:此題考查了不定代詞的用法。Ones被用來代替前面已出現過的複數名詞 problems。

知識點:代詞

題型:選擇題