来自：查字典高考网 2014-12-25
Question 1-12
Orchids are unique in having the most highly developed of all blossoms， in which the usual male and female reproductive organs are fused in a single structure called the column. The column is designed so that a single pollination will fertilize hundreds of thousands， and in some cases millions， of seeds，so microscopic and light they are easily carried by the breeze. Surrounding the column are three sepals and three petals，sometimes easily recognizable as such， often distorted into gorgeous，weird， but always functional shapes. The most noticeable of the petals is called the labellum， or lip. It is often dramatically marked as an unmistakable landing strip to attract the specific insect the orchid has chosen as its pollinator.
To lure their pollinators from afar， orchids use appropriately intriguing shapes， colors， and scents. At least 50 different aromatic compounds have been analyzed in the orchid family，each blended to attract one， or at most a few， species of insects or birds. Some orchids even change their scents to interest different insects at different times.
Once the right insect has been attracted， some orchids present all sorts of one-way obstacle courses to make sure it does not leave until pollen has been accurately placed or removed. By such ingenious adaptations to specific pollinators，orchids have avoided the hazards of rampant crossbreeding in the wild， assuring the survival of species as discrete identities. At the same time they have made themselves irresistible to collectors.
1.What does the passage mainly discuss？
（A） Birds
（B） Insects
（C） Flowers
（D） Perfume
2.The orchid is unique because of
（A） the habitat in which it lives
（B） the structure of its blossom
（C） the variety of products than can be made from it
（D） the length of its life
3.The word fused in line 3 is closet in meaning to
（A） combined
（B） hidden
（C） fertilized
（D） produced
4.How many orchid seeds are typically pollinated at one time？
（A） 200
（B） 2，000
（C） 20，000
（D） 200，000
5.Which of the following is a kind of petal？
（A） The column
（B） The sepal
（C） The stem
（D） The labellum
6.The labellum（line10） is most comparable to
（A） a microscope
（B） an obstacle course
（C） an airport runway
（D） a racetrack
7.The word lure in line 13 is closet in meaning to
（A） attract
（B） recognize
（C） follow
（D） help
8.Which of following is NOT mentioned as a means by which an orchid attracts insects？
（A） Size
（B） Shape
（C） Color
（D） Perfume
9.The word their in line 17 refers to
（A） orchids
（B） birds
（C） insects
（D） species
10.Which of the following statements about orchids scents does the passage support？
（A） They are effective only when an insect is near the blossom.
（B） Harmful insects are repelled by them.
（C） They are difficult to tell apart.
（D） They may change at different times.
11.The word placed in line 21 is closet in meaning to
（A） estimated
（B） measured
（C） deposited
（D） identified
12.The word discrete in line 24 is closet in meaning to
（A） complicated
（B） separate
（C） inoffensive
（D） functional
【1996年5月托福阅读全真考题】相关文章：
[标签：海外留学,考试,托福,,]
葛军大爷怒了：高考我出了个小学数学送分题，你们跟我说不会做？
美术联考用纸上海考试模拟试卷纸高考统考纸 4k水粉纸素描纸 速写纸卡纸美术模拟测试试卷纸 美术考试专用纸
高考阅卷名师给考生的高考作文密训课 第3集 高考作文审题实操方法精讲（一）
沈阳音乐学院郎亦农教授的女高音高考曲目解析课程 第9集 《赛吾里麦》演唱讲解，音乐表现一定要自然流畅
爆笑班主任 第一季 第220集 高考前最后一只视频，山东王老师揭秘高考的秘密
高考阅卷名师给考生的高考作文密训课 第5集 高考作文审题实操方法精讲（三）
优秀！英语数学双满分，广西“最牛”高考状元730分刷新最高纪录
1000张学生用草稿纸考研专用免邮空白便宜薄演草演算纸白纸本书写纸批发打草a4大张实惠装18k高考数学草稿本
