网址:http://m.1010jiajiao.com/timu3_id_2449072[举报]
C
A blow-fly was looking for an ideal place like rotting meat to lay her eggs so that when her little babies were born, they could feed on the meat.
As she turned a corner in the grassland, she smelt something that smells like rotten meat in the air! With a great joy she landed on it and laid her eggs. She was happy that her children would have enough food to eat.
But the fly did not know she had made a great mistake. What she had sat upon was not meat but a flower, which smells badly. It is called a carrion flower. So, when the blow-fly’s eggs hatched and the little maggots(蛆)came out, they had nothing to eat. They died of starvation.
The carrion flower is one of the many flowers which send out dirty smells to attract flies. The Rafflesia stinks like rotting meat, while the tropical Lords and Ladies flower gives out a smell like rotting fish.
They do it for a special reason. These plants cannot move from their place. But it is important for the male cell of one plant to get in touch with the female cell of another plant. Once that is done, the seed of the plant will bloom and give birth to another plant.
The plant uses its stink to attract flies. As soon as the blow-fly sits on the follower, it is captured by the flower with strong hair. When the hair falls, the fly is free to fly- but it takes some pollen(花粉) with it. And goes and sits on another plant. The male cell of one plant meets the female cell of the other. The seed gets new life.
64. Why did the fly land on something smelly?
A. She was too careless before her bearing. B. She liked the particular smell very much
C. She hoped to find some food for her babies. D. She couldn’t find a better place for delivery.
65. The little maggots finally died because_________.
A. they were born too weak B. they lacked food available
C. carrion flower were poisonous D. their mother didn’t take care of them
66. Flowers like carrion flower and Rafflesia naturally smell terrible so that_________.
A. they need insects to spread their pollen B. they succeed in producing more seeds
C. their seeds can be carried to other places D. they can manage to absorb more nutrients
67. What is the best title of the text?
A. Dirty Tricks B. Smelly Plants C. A strange Flower D. Secrets of Nature.
第二节 信息匹配(共5小题;每小题2分,满分10分)
以下是一些新闻报道的信息:
|
A.Science magazine published the study about orangutans. The scientists collected evidence from years of observations in six areas on Borneo and Sumatra. The scientists found that the animals demonstrated a total of twenty-four signs of cultural activity. Several actions were demonstrated in some orangutan groups, but not others. |
|
B.The Environmental Investigation Agency and Telapak released the report. Telapak is an environmental group based in Indonesia. The Environmental Investigation Agency operates in several countries. The two groups say Indonesia controls ten percent of the world's tropical rainforests. |
|
C.Richard Sandor is the chairman of the C-C-X. He praised the companies forming the group for demonstrating leadership. He said they believe that an active way to deal with global warning helps everyone. The group said its members want to reduce costs they may face from future rules on greenhouse gas emissions. Trading credits may help businesses find the most effective methods to reduce pollution. Members also hope to improve their public image on environmental issues. |
|
D.Their most detailed effort involved ninety-nine kinds of birds, insects and plants in North America and Europe. They found that the territory where these plants and animals live has moved north by an average of six kilometers every ten years. In Europe, some butterflies now live as much as one hundred kilometers to the north because of changes linked to higher temperatures. |
E. The new report says many areas experienced unusual weather in two thousand and two. Most of Asia, for example, was warmer than usual. India had unusually high temperatures in April and May. The extremely hot weather caused hundreds of deaths. There also were extremely dry conditions across India. Parts of Africa experienced unusual heavy rains. Yet other areas in Africa had unusual dry weather.
F. Hydrogen is the most common element in the universe. Hydrogen is a colorless gas. On Earth, it is present in large amounts in natural gas, coal, plants and water. By weight, hydrogen produces the highest energy levels of any known fuel. When burned in an engine, hydrogen releases no harmful pollution into the environment. When powering a fuel cell, the only waste is water. However, hydrogen is difficult to store. It also burns easily.
请阅读以下新闻信息,然后匹配上面新闻相关的报道内容:
51. A severe ocean storm hit South Korea in August. It set a new national record for rainfall. In central Europe, more than one hundred people died in flooding caused by heavy rainfall in September. The flooding also resulted in thousands of millions of dollars in property damage. Yet large parts of North and South America had extremely dry weather.
52. One member of the Chicago Climate Exchange is American Electric Power. It's the biggest owner of electric power producers in the United States. Company officials say they hope their company's membership will demonstrate the ability of the C-C-X to grow.
53. For example, members of some groups make a kissing noise by tightening their mouths and sucking in air. Some groups use leaves to clean themselves or protect their hands from sharp objects. The scientists found that some of the animals use sticks as tools to remove insects from holes in trees. Other orangutans use leaves to crush insects or gather water.
54. Professors Parmesan and Yohe used similar methods to examine one hundred and seventy-two kinds of wildlife. They examined the timing of events in the spring, such as the appearance of flowers and the reproduction of animals. They found that these events happened an average of two days earlier than normal every ten years.
55. They say illegal operations to remove trees are causing large areas of forest to disappear. Environmental Investigation Agency director Dave Currey says the illegal operations are completely out of control.
查看习题详情和答案>>
Plants can’t communicate by moving or making sounds, as most animals do. Instead, plants Produce volatile compounds, chemicals that easily change from a liquid to a gas. A flower’s sweet smell, for example, comes from volatile compounds that the plant produces to attract insects such as Bugs and bees.
Plants can also detect volatile compounds produced by other plants. A tree under attack by Hungry insets, for instance, may give off volatile compounds that let other trees know about the Attack. In response, the other trees may send off chemicals to keep the bugs away ——or even Chemicals that attract the bugs’ natural enemies.
Now scientists have created a quick way to understand what plants are saying: a chemical Sensor(传感器)called an electronic nose. The “e-nose” can tell compounds that crop plants make When they’re attacked Scientists say the e-nose could help quickly detect whether plants are being Eaten by insects. But today the only way to detect such insects is to visually inspect individual Plants. This is a challenging task for managers of greenhouses, enclosed gardens than can house Thousands of plants.
The research team worked with an e-nose than recognizes volatile compounds. Inside the device, 13 sensors chemically react with volatile compounds Based on these interactions, the e-nose gives off electronic signals that the scientists analyze using computer software.
To test the nose, the team presented it with healthy leaves from cucumber, pepper and tomato plants, all common greenhouse crops. Then scientists collected samples of air around damaged leaves from each type of crop, These plants had been damaged by insects, or by scientists who made holes in the leaves with a hole punch(打孔器). The e-nose, it turns out, could identify healthy cucumber, pepper and tomato plants based on The volatile compounds they produce, It could also identify tomato leaves that had been damaged. But even more impressive, the device could tell which type of damage ---- by insects or with a hole Punch ---- had been done to the tomato leaves.
With some fine-tuning, a device like the e-nose could one day be used in greenhouses to quickly spot harmful bugs, the researchers say. A device like this could also be used to identify fruits that are perfectly ripe and ready to pick and eat, says Natalia Dudareva, a biochemist at Purdue University in West Lafayette, Ind. who studies smells of flowers and plants. Hopefully, scientists believe, the device could bring large benefits to greenhouse managers in the near future.
We learn from the text that plants communicate with each other by____.
A. making some sounds B. waving their leaves
C. producing some chemicals D. sending out electronic signals
What did the scientists do to find out if the e-nose worked?
A. They presented it with all common crops.
B. They fixed 13 sensors inside the device.
C. They collected different damaged leaves.
D. They made tests on damaged and healthy leaves.
According to the writer, the most amazing thing about the e-nose is that it can___.
A. pick out ripe fruits
B. spot the insects quickly
C. distinguish different damages to the leaves
D. recognize unhealthy tomato leaves
We can infer from the last paragraph that the e-nose_____.
A. is unable to tell the smell of flowers
B. is not yet used in greenhouses
C. is designed by scientists at Purdue
D. is helpful in killing harmful insects
查看习题详情和答案>>All plant cells are able to take up water. Even dead ones do to a certain degree. Absorption of water by dead cell walls makes wood swell(肿胀). In common land plants, the living cells of roots take up most of the water. Land plants without roots do exist, however. Those greenish-yellow lichens(苔藓)you see on tree trunks and on rocks in the high mountains have no roots. Half a billion years ago, when water plant started to invade the land, the first primitive land plants did not have roots; they were marsh (沼泽) plants.
Even among the flowering plants, one finds rootless forms. These flowering plants are the so-called higher plants because they evolved more recently and are thus considered higher on the evolutionary scale. In the Peruvian desert, there grows one of these rootless higher plants, a bromeliad. It is a relative of the pineapple. Even if this plant had roots, they would be of no use, because where the plant grows, it never rains. The plant gets its water exclusively from the dew it collects at night, when its leaves cool off. Such rootless plants, of course, can be moved with ease, but they will only grow when they are placed out in the open. If they are placed too near a house, the radiation from the heat of the house prevents the leaves from cooling and so prevents dew from forming, and the plant dies. In the southern United States and in Puerto Rico, one sees bromeliads growing high above the streets on the insulation of electric wires. These plants get their water from rain, and the only soil they ever come in contact with is the dust that may blow on their leaves.
Wood swells because of _______.
A. the dead cell walls B. tiny drops of water entering the dead cell
C. the growth of the cell D. the death of the cell
From the passage we know that the evolutionary scale is arranged according to ______.
A. evolutionary cycles B. heights and depths
C. time D. kinds
The bromeliad is a plant that _______.
A. has useless roots B. is a pineapple
C. can grow anywhere D. takes up water through its leaves
Which of the following is NOT true?
Water plants existed before land plants.
Only living plant cells take up water.
The greenish-yellow lichens are uncommon land plants.
The living cells of roots absorb more water than the rest of the plant.
The most suitable title for this passage is ______.
A. water intake by cells B. rootless plantsC. plant in the desert D. higher plants
查看习题详情和答案>>All plant cells are capable of taking up(吸收)water. Even dead ones do to a certain degree. Absorption(吸收)of water by dead cell walls makes wood become larger.
In common land plants, the living cells of roots take upmost of the water. Land plants without roots do exist, however. Those greenish-yellow lichens(苔藓)you see on rocks in the high mountains have no roots. Half a billion years ago, when water plants started to enter the land, the first land plants did not have roots.
Even among the flowering plants, one finds rootless forms. These flowering plants are “the higher plants” because they evolved(进化)recently and are thus considered higher on the evolutionary scale(进化度).
In the Peruvian desert, there grows one of these rootless higher plants, a bromeliad. It is a relative of the pineapple. Even if this plant had roots, they would be of no use, because where the plant grows, it never rains. The plant gets its water only from the dew(露水)it collects at night, when its leaves cool off. Such rootless plants, of course, can be moved with ease, but they will only grow when they are placed out in the open. If they are placed too near a house, the radiation from the heat of the house prevents the leaves from cooling and so prevents dew from forming, and the plant dies.
In the southern United States and in Puerto Rico, one sees bromeliads growing high above the streets on the insulation(绝缘物)of electric wires. These plants get their water from rain, and the only soil they ever come in contact with is the dust that may blow on their leaves.
【小题1】Wood becomes larger because of .
| A.dead cell walls | B.water entering dead cells |
| C.the growth of cells | D.the death of cells |
| A.evolutionary cycles | B.heights and depths |
| C.time | D.kinds |
| A.has no roots | B.is a pineapple |
| C.can grow anywhere | D.takes up water through its leaves |
| A.Absorption of water by plants | B.Rootless plants in America |
| C.Plants in the desert | D.Higher plants |