試卷：無年度 - 2000年1月托福閱讀#20905
| 科目：TOEFL(Test of English as a Foreign Language)托福
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試卷名稱：無年度 - 2000年1月托福閱讀#20905
科目：TOEFL(Test of English as a Foreign Language)托福
31. During the procedure described in paragraph 3, when clay particles are placed into water
they
(A) stick to the sides of the water container
(B) take some time to sink to the bottom
(C) separate into different sizes
(D) dissolve quickly
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