[請益] 一題文法(this/that)

[recary (recary)]

1.The effects of these new drugs are more powerful and less predictable than

  those of the drugs they imitate. ___ presents enormous risks to users.

  (A)This  (B)That

  Ans: (A)

  →請問這裡選(A)是完全憑語感或是有其他判斷方式？

  Many thanks!


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→ hoch:This 通常指最近的前面一句所講的事。That 指的是比較遠的。
→ hoch:我是這樣判斷。請高手補充。