题目内容
（请给出正确答案）
From its experience, the dog found that ______.
A．only the paper with Mrs. Smith's words on it could bring it meat
B．the butcher would give the meat to it whenever he saw it
C．a piece of paper could bring him half a pound of meat
D．Mrs. Smith would pay for the meat it got from the butcher
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更多“From its experience, the dog f…”相关的问题
Which of the following is NOT true of panic disorder？
A．It is the most serious type of phobias.
B．The doctors are getting to know its cause.
C．It will make the sufferers' safe place become smaller.
D．The doctor can use the experience from social phobia.
How did Alfred Russel Wallace's view of peacocks differ from that of Darwin？
A．He thought that a peahen's choice of mate was practical.
B．He believed that animals could experience emotions.
C．He believed animals appreciated beauty for its own sake.
D．He believed that the peacock's train must have a protective function.
Practical experience, on the other hand, can give us more useful knowledge. It is said that one learns best by doing, and I believe that this is true, whether one is successful or not. In fact, I think making mistakes is the best way to learn. Besides, if one wants to make new advances, it is necessary to act. Innovations(革新) do not come about through reading but through experimentation. Finally, one can use the skills and wisdom gained through the study of books to practical experience, making a meaningful experience more meaningful. However, unless it is applied to real experiences, book knowledge remains theoretical (理论上的) and, in the end, is useless. That is why I believe that knowledge gained from practical experience is more important than that gained from books.
What does the text mainly discuss？
A．Importance of knowledge.
B．Differences between knowledge and practice.
C．How to gain experience.
D．Book knowledge and kractical experience.
An Unusual Experience at Sea
It was early one morning in February 1972 when Mayoral and his partner Santos Luis Perez set out to fish in Laguna San lgnacio. Hundreds of gray whales were swimming in the three-mile-long, one-mile-wide inlet. This was usual between December and April, for the whales breed in the protected inlets of Baja, the final destination of their annual 6,000-mile migration from the Arctic. Mayoral and Perez stayed as for as possible from the spouting (喷涌) creatures, because the whales were said to smash boats with their powerful flukes (鲸尾的叶). Mayoral, who had 16 years' experience at sea, knew no one who had been close to a healthy gray whale and lived.
As Mayoral rowed to catch the outgoing (退出去的) tide, he saw, straight ahead, a whale approaching. Heart pounding, the 31-year-old turned the little wooden boat and pulled hard for shore. Try as he might, however, he could not row over the huge beast. In moments, it overtook them. Expecting the worst, the fishermen dropped to their knees and made the sign of the cross. The whale raised its nine-foot head out of the water and looked at them. Then, remarkably, it began to rub gently against the boat.
Sinking and resurfacing(重新露出水面) on opposite sides of the boat, the whale continued its gentle rubbing for almost an hour. At first the men prayed, frozen in fear. But gradually Mayoral 's terror gave way to curiosity. He was tempted to reach out and touch this oddly unthreatening monster, but a lifetime of caution kept him still.
At last, having finished with whatever its purpose had been, the whale disappeared below the surface. Some time passed before either man spoke. Then they headed home. To his wife, Mayoral said only, "No fish today."
But word spread through the cluster of small wooden houses near the salt-water lake. A strange thing had happened: one of the whales had tried to touch the men, and the men had returned unharmed. Why？
In nights to come, by faint kerosene lamps, Mayoral and Perez told the story. They and other fishermen struggled to understand. What did the whale want？
We know from the passage that the whales traveled 6,000 miles from the Arctic to the inlets of Baja ______.
A．just to have a change in environment
B．to give birth to baby whales in winter
C．to escape from the cold water for a while
D．to find a warm place to settle down
An Unusual Experience at Sea
It was early one morning in February 1972 when Mayoral and his partner Santos Luis Perez set out to fish in Laguna San Ignacio. Hundreds of gray whales were swimming in the three-mile-long, one-mile-wide inlet. This was usual between December and April, for the whales breed in the protected inlets of Baja, the final destination of their annual 6,000-mile migration from the Arctic. Mayoral and Perez stayed as for as possible from the spouting (喷涌) creatures, because the whales were said to smash boats with their powerful flukes (鲸尾的叶). Mayoral, who had 16 years' experience at sea, knew no one who had been close to a healthy gray whale and lived.
As Mayoral rowed to catch the outgoing (退出去的) tide, he saw, straight ahead, a whale approaching. Heart pounding, the 31-year-old turned the little wooden boat and pulled hard for shore. Try as he might, however, he could not row over the huge beast. In moments, it overtook them. Expecting the worst, the fishermen dropped to their knees and made the sign of the cross. The whale raised its nine-foot head out of the water and looked at them. Then, remarkably, it began to rub gently against the boat.
Sinking and resurfacing (重新露出水面) on opposite sides of the boat, the whale continued its gentle rubbing for almost an hour. At first the men prayed, frozen in fear. But gradually Mayoral's terror gave way to curiosity. He was tempted to reach out and touch this oddly unthreatening monster, but a lifetime of caution kept him still.
At last, having finished with whatever its purpose had been, the whale disappeared below the surface. Some time passed before either man spoke. Then they headed home. To his wife, Mayoral said only, "No fish today."
But word spread through the cluster of small wooden houses near the salt-water lake. A strange thing had happened: one of the whales had tried to touch the men, and the men had returned unharmed. Why？
In nights to come, by faint kerosene lamps, Mayoral and Perez told the story. They and other fishermen struggled to understand. What did the whale want？
We know from the passage that the whales traveled 6,000 miles from the Arctic to the inlets of Baja ______.
A．just to have a change in environment
B．to give birth to baby whales in winter
C．to escape from the cold water for a while
D．to find a warm place to settle down
Now this trend is changing. Plans have been made to 【24】______ the parks to their natural condition as much as possible. The objective of such a move would be to secure the preservation of the parks for future generations, 【25】______ allowing present-day visitors to experience pure wilderness, 【26】______ from any obvious signs of civilization — an opportunity which is quickly disappearing in the twentieth century. 【27】______ plans call only 【28】______ a reduction in the number of cars 【29】______ into the parks each day, but 【30】______ , tourists may have to leave their cars at the gates and then dither visit the park on foot 【31】______ use park 【32】______ . 【33】______ , stores and hotels may no longer be allowed within park boundaries and even the number of campgrounds may be restricted.
Denali National Park in Alaska serves as an excellent 【34】______ for this new type of park, one which has been changed only slightly from its 【35】______ state. There is only one road, unpaved in 【36】______ ,which cross 【37】______ Denali. As car traffic is strictly limited, many visitors experience the magnificent 【38】______ and wildlife from a park bus. There are no hotels or stores and only seven campgrounds within Denali's 3,000 square miles. This 【39】______ isolation offers backpackers, canoeists, and other sport enthusiasts a 【40】______ physical and psychological challenge.
【21】
A．possible
B．accessible
C．approachable
D．reachable
In the past, the Park Service focused on making the big scenic parks more 【21】______ and comfortable for tourists. Roads were paved to allow "windshield visitors" to experience the grandeur of nature without leaving their cars, and a 【22】______ number of hotels and grocery stores were permitted to open 【23】______ the park boundaries.
Now this trend is changing. Plans have been made to 【24】______ the parks to their natural condition as much as possible. The objective of such a move would be to secure the preservation of the parks for future generations, 【25】______ allowing present-day visitors to experience pure wilderness, 【26】______ from any obvious signs of civilization -- an opportunity which is quickly disappearing in the twentieth century. 【27】______ plans call only 【28】______ a reduction in the number of cars 【29】______ into the parks each day, but 【30】______ , tourists may have to leave their cars at the gates and then either visit the park on foot 【31】______ use park 【32】______ 【33】______ , stores and hotels may no longer be allowed within park boundaries and even the number of campgrounds may be restricted.
Denali National Park in Alaska serves as an excellent 【34】______ for this new type of park, one which has been changed only slightly from its 【35】______ state. There is only one road, unpaved in 【36】______ , which cross 【37】______ Denali. As car traffic is strictly limited, many visitors experience the magnificent 【38】______ and wildlife from a park bus. There are no hotels or stores and only seven campgrounds within Denali's 3,000 square miles. This 【39】______ isolation offers backpackers, canoeists, and other sport enthusiasts a 【40】______ physical and psychological challenge.
【21】
A．possible
B．accessible
C．approachable
D．reachable
Much of the energy that comes from the Sun never reaches the Earth's surface. It is either reflected or absorbed by the gases in the upper atmosphere. Of the energy that reaches the lower atmosphere, 30% is reflected by clouds or the Earth's surface. The remaining 70% warms the surface of the planet, causes water to evaporate, and provides energy for the water cycle and weather. Only a tiny part, approximately 0.023%, is actually used by green plants to produce food.
Many gases found in the atmosphere actually reflect heat energy escaping from the Earth's surface back to the Earth. These gases act like the glass of a greenhouse in that they allow energy from the Sun to enter but prevent energy from leaving. They are therefore called greenhouse gases.
When sunlight strikes an object, some of the energy is absorbed and some is reflected. The amount reflected depends on the surface. For example, you've probably noticed how bright snow is when sunlight falls on it. Snow reflects most of the energy from the Sun, so it contributes to the low temperatures of winter. Dark-colored surfaces, such as dark soil or forest, absorb more energy and help warm the surrounding air.
What is the major source of evaporation of water from the oceans and lakes？
A．The moon.
B．The sun.
C．The star.
D．The earth.
