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首頁 > TOEFL(Test of English as a Foreign Language)托福 > 無年度 - 95年10月TOFEL閱讀(Page23-24)#20916 > 試題詳解

8. The word "there" in line 14 refers to
(A) treetops
(B) roots
(C) water columns
(D) tubes

答案：登入後查看
統計： A(1), B(0), C(0), D(3), E(0) #802746

其他試題

4. What do the experiments mentioned in lines 5-7 prove? (A) Plant stems die when deprived of water (B) Cells in plant stems do not pump water (C) Plants cannot move water to high altitudes (D) Plant cells regulate pressure within stems

5.How do botanists know that root pressure is not the only force that moves water in plants? (A) Some very tall trees have weak root pressure. (B) Root pressures decrease in winter. (C) Plants can live after their roots die. (D) Water in a plant's roots is not connected to water in its stem.

6. Which of the following statements does the passage support? (A) Water is pushed to the tops of trees. (B) Botanists have proven that living cells act as pumps. (C) Atmospheric pressure draws water to the tops of tall trees. (D) Botanists have changed their theories of how water moves in plants.

7. The word "it" in line 12 refers to (A) top (B) tree (C) water (D) cohesion-tension theory.

9. What causes the tension that draws water up a plant? (A) Humidity (B) Plant growth (C) Root pressure (D) Evaporation

10. The word "extend" in line 18 is closest in meaning to (A) stretch (B) branch (C) increase (D) rotate

11. According to the passage, why does water travel through plants in unbroken columns? (A) Root pressure moves the water very rapidly. (B) The attraction between water molecules in strong. (C) The living cells of plants push the water molecules together. (D) Atmospheric pressure supports the columns.

12.Why does the author mention steel wire in line 22? (A) To illustrate another means of pulling water (B) To demonstrate why wood is a good building material (C) To indicate the size of a column of water (D) To emphasize the strength of cohesive forces in water

13.Where in the passage does the author give an example of a plant with low root pressure? (A) Lines3-4 (B) Lines5-7 (C) Lines10-11 (D) Lines12-13 Question 14-22

14. With which of the following subjects is the passage mainly concerned? (A) Types of mass transportation. (B) Instability of urban life. (C) How supply and demand determine land use. (D) The effects of mass transportation on urban expansion.

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