题目内容
The English rock group The Hollies once sang, " All need is the air that I breathe. " The song could have been referring to air plants (气生植物) .There are more than 650 types of air plants that can grow without soil.
Air plants get all the water and nutrients (营养物) they need through their leaves. They use their roots only for attaching themselves to rocks,trees and the ground. Air plants come from the southern United States,Mexico,and Central America. They love warm weather.
Air plants are perfect for those with a fear of houseplants — it9s easy to grow and care for them. Even though they are easy to care for,there are a few rules to follow when growing air plants. One of the most important things is — air!Fresh and clean air keeps your plants happy. While they are called M air plants" , they still need water,fertilizer (肥料) and light to live. Air plants need a little water two to three times a week. They need fertilizer weekly. Enough sunlight is very necessary. Although they love warm weather,most air plants need protection from full sun. If taken good care of,air plants will live for over ten years.
Many people enjoy making air plants into simple art at home. The plants can grow almost everywhere,except in soil or in water. Many people place air plants in glass containers and hang them up in the room. Eacri air plant will flower once in its lifetime. Flowers can last from several days to many months.
46. Air plants use their roots for .
A .getting the water and nutrients they need
B. attaching themselves to rocks,trees and the ground
C. getting enough fresh air to grow
D. attaching themselves to the soil
47. What is neeessary to air plants?
A. Fresh air,direct sunshine and water.
B. Clean air,plenty of sunshine and fertilizer.
C. Fresh air,cold weather and water.
D. Clean air,fertilizer and darkness.
48. What is the main idea of the third paragraph?
A. How to grow and care for air plants.
B. How to make air plants into simple art.
C. Introducing where air plants come from.
D. Introducing the functions of air plants.
49. According to the passage,which of the following statements is NOT true?
A. The Hollies is an English rock group.
B. Air plants can grow without soil.
C. Each air plant flowers once a year.
D. If taken good care of,air plants will live for more than ten years.
[阅读B篇短文大意]本文主要介绍了气生植物，以及养护气生植物的方法和注意事项。
46. B 由文章第二段中的” They use their roots only for attaching themselves to rocks,trees and the ground” 可知答案。
47. B 由文章第三段中的” Fresh and clean air keeps your plants happy. While they are called 4 air plants' , they still need water,fertilizer (月巴料) and light to live” 和” most air plants need protection from full sun” 可知答案.
48. A通读第三段内容可知，第三段主要讲了如何养护气生植物，故A项符合题意。
49. C 由文章最后一段中的” Each air plant will flower once in its lifetime"可知C项表述错误。
