[C] keeping green
[D] producing carbon dioxide
42. The essential function of photosynthesis in terms of plant needs is ________.
[A] to form sugars
[B] to derive energy from light
[C] to preserve water
[D] to combine carbon dioxide with water
43. The second paragraph uses facts to develop the essential idea that ________.
[A] a plant efficiently utilizes most of the water it absorbs
[B] carbon dioxide is the essential substance needed for plant development
[C] a plant needs more water than is found in its composition
[D] the stronger the wind, the more the water vapor loss
44. According to the passage, which of the following statements is TRUE?
[A] The mineral elements will not be absorbed by the plant unless they are dissolved in its root.
[B] The woody stems contain more water than the leaves.
[C] Air existing around the leaf is found to be saturated.
[D] Only part of the carbon dioxide in the plants is synthesized.
45. This passage is mainly about ________.
[A] the functions of carbon dioxide and water
[B] the role of water in a growing plant
【1991年考研英语阅读真题及答案解析】相关文章:
★ 2013年6月英语六级考试备考深度阅读试题模拟与解析(7)
★ 2014年12月英语六级阅读理解真题训练:Great changes
最新
2016-10-18
2016-10-11
2016-10-11
2016-10-08
2016-09-30
2016-09-30