3. Horses contributed to the spread of culture by ______.

A. carrying heavy loads

B. changing farming methods

C. serving as a means of transport

D. advancing agriculture in different areas

2. The author uses the Shetland horse as an example to show ______.

A. it is smaller than the Clydesdale horse

B. horse used to have gentle personalities

C. some horses have better shaped than others

　　 D. horses were of less variety before domestication

1. Before domestication horses were ______.

A. caught for sports　　 B. hunted for food

C. made to pull ploughs　 D. used to carry people

4. Which of the following is true according to the passage?

A. Clinton broke ground for the canal at both ends.

B. Clinton started building the canal before he became governor.

C. All parts of the canal were completed at the same time.

D. Construction of the canal took eight years.

第87天　　　　　　　　　　　　　 A

Domestic (驯养的) horses now pull ploughs, race in the Kentucky Derby, and carry police. But early horses weren’t tame (驯服的) enough to perform these kinds of tasks. Scientists think the first interactions humans had with horses were far different from those today.

Thousands of years ago, people killed the wild horses that lived around them for food. Over time, people began to catch the animals and raise them. This was the first step in domestication.

As people began to tame and ride horses, they chose to keep those animals that had more desirable characteristics. For example, people may have chosen to keep horses that had a gentle personality so they could be ridden more easily. People who used horses to pull heavy loads would have chosen to keep stronger animals. Characteristics like strength are partly controlled by the animals’ genes. So as the domesticated horses reproduced, they passed the characteristics on to their young. Each new generation of houses would show more of these chosen characteristics.

Modern day horse breeds come in a wide variety of shapes and sizes. This variety didn’t exist in the horse population before domestication. The Shetland horse is one of the smallest breeds-typically reaching only one meter tall. With short, strong legs, the animals were bred to pull coal out of mine shafts (矿井) with low ceilings. Huge horses like the Clydesdale came on the scene around 1700. People bred these heavy, tall horses to pull large vehicles used for carrying heavy loads.

The domestication of horses has had great effects on societies. For example, horse were important tools in the advancement of modern agriculture. Using them to pull ploughs and carry heavy loads allowed people to farm more efficiently. Before they were able to ride horses, humans had to cross land on foot. Riding horses allowed people to travel far greater distance in much less time. That encouraged populations living in different areas to interact with one another. The new from of rapid transportation helped cultures spread around the world. (08北京卷)

3. Which of the following is true according to the passage?

A. The Erie Canal brought profits of over $114, 000, 000.

B. It’s 363 miles from the Great Lakes to the Atlantic Ocean.

C. The West was more advanced than the East when the canal was built.

D. Many other states helped New York built the canal.

2. It can be inferred that ________ into the Atlantic Ocean.

A. the Great Lakes flow　　　　B. the Hudson River flows

C. Lake Erie flows　　　　　D. the Erie Canal flows

1. We can see that the Erie Canal ________.

A. joined the Great Lakes together

B. crossed New York from north to south

C. played an important part in developing New York City

D. was the first waterway built in the US

5. From the passage we can see that the writer _______ the Death Valley.

A. appreciates 　　　　　　　　　 B. is fearful of

C. dislikes 　　　　　　　　　　　　 D. is tired of

B

The Erie Canal was the first important national waterway built in the US. It crossed New York from Buffalo on Lake Erie Troy to Albany on the Hudson River. It joined the Great Lakes with the Atlantic Ocean. The canal served as a route over which industrial goods could flow into the west, and materials could pour into the east. The Erie Canal helped New York develop into the nation’s largest city.

The building of the canal was paid for entirely by the state of New York. It cost $ 7 143 789, but it soon gained its price many times over. Between 1825, when the canal was opened, and 1882, when toll charges(过运河费) were stopped, the state collected $121 461 891.

For a hundred years before the Erie was built, people had been talking about a canal which could join the Great Lakes and the Atlantic Ocean. The man who planned the Erie Canal and carried the plan through was De Witt Clinton. Those who were against the canal laughingly called it “Clinton’s Ditch(沟)”. Clinton talked and wrote about the canal and drew up plans for it. He and Governor Morris went to Washington in 1812 to ask for help for the canal, but they were unsuccessful.

Clinton became governor of New York in 1817, and shortly afterwards, on July 4, 1817, broke ground for the canal in Rome, N.Y. The first part of the canal was completed in 1820. As the canal grew, towns along its course developed fast. The length of the canal is 363 miles.

4. Devil Golf Course is famous for _______.

A. the frequent wind 　　　　 B. the colors of the sand

C. dream-like sights 　　　　　 D. the sand sculptures

3. From the passage we can learn that _______.

A. no one had ever known the desert before the miners

B. it’s still not easy to travel across the desert

C. people can find gas-stations, cafes and hotels in the desert

D. people have changed the natural sight of the desert