[請益] as a result/therefore

[recary (recary)]

1.The population is aging at the fastest rate ever recorded. Health care costs

  are, ___, rising like crazy

  (A)as a result  (B)therefore

  Ans: (A)



  查了一些資料，有些資料寫 as a result = therefore，但請問這裡最後選

  as a result的原因？


  Thanks!

--
※ 發信站: 批踢踢實業坊(ptt.cc) 
◆ From: 122.118.40.146
推 Dayard:因為therefore不必前後用逗點 as a result才需要這樣插入
→ iken8782:樓上正確 但更好的解釋是 Therefor 前面比較適合用句號