1. To break thick ice, an icebreaker boat moves fast enough to ride up
on the ice, __________ under its weight.
(a) which then breaks
(b) for which then breaks
答案是(b)，這種題目我老是分不清楚，什麼時候該加上for呢?
2. It was novelist and poet ________ in 1968 founded Jackson State University.
(a) Margaret
(b) Margaret who
答案是(b)，為啥要加who，總覺得唸起來怪怪的... ^^"
3. The pulse that may be felt whenever an artery passes over a solid
^^^^^^^^
請問這邊的錯要如何修正呢?
structure.
謝謝解答了!!!
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