1 . 阅读下列材料，在空白处填入适当的内容或括号中单词的正确形式。将答案填写在答题纸的相应位置。

This city of Pisa in Italy would not be the same if the Tower of Pisa did not lean (倾斜). Millions of tourists visit Pisa every year     1    (see) the 196-foot tower. Some people believe that is the place     2     Galileo did his experiments with gravity nearly 500 years ago.

Construction of the tower     3    (begin) in 1173 when Pisa was a center of power and wealth. But work was stopped several times because of wars. The eight-story tower was not completed     4     the late 1200s. Even then, the tower leaned.

The tower itself is made of marble and     5    (weigh) 16,000 tons. Problems in the construction of the tower     6    (cause) by the soil underneath. The ground is softer on one side than on     7     other. The entire tower has been     8    (slow) sinking into the ground for centuries. The south side has sunk 6.1 feet below ground level. The north side has sunk 12.3 feet.

Now, engineers have made some     9    (correct) by removing soil from under one side of the tower and pulled the tower a bit more upright. These should keep the tower     10     (stand) up for another 300 years.

2 . “I could see a huge flow (流动) of water, coming down fast from very high. I had no idea of shape, or situation, or anything. It was just so big.”

These are the words of the great English writer Charles Dickens. He wrote them when he was visiting Niagara Falls. This waterfall is on the border (边界) of the United States and Canada. It is one of the largest in the world, and the largest in North America.

Niagara Falls is on the Niagara River. The river divides just before the waterfall, and there are actually three waterfalls. On the American side are American Falls and Bridal Veil Falls. Horseshoe Falls is mostly on the Canadian side. The name comes from its shape — like a horseshoe, in a half circle. Horseshoe Falls is the widest of the three.

People mainly know about Niagara Falls because of its size and natural beauty. However, the Niagara River is also an important source of electricity.

In the 1890s, the Westinghouse Electric Company built a large power system (电力系统) on the river. Many other companies also hoped to use the land for factories and power systems. However, around the same time, many people began to work to protect the natural area. Soon, the governments of the United States and Canada got involved with it. They protected the land around Niagara Falls. They made parks — green, natural areas. No one could buy this land for factories. For hundreds of years, millions of people have visited Niagara Falls to enjoy its beauty.

1. From Paragraph 1, we can know Charles Dickens was shocked by Niagara Falls’ __________.

A．speed	B．color
C．size	D．beauty

2. Which of the following is NOT true about Niagara Falls?

A．It has three waterfalls.

B．It’s on the Niagara River.

C．It’s on the border of two countries.

D．It’s the widest waterfall in the world.

3. Horseshoe Falls gets its name from its ________.

A．shape

B．sound

C．history

D．location

4. What can we learn from the passage?

A．The Niagara River is badly polluted.

B．There are no factories around Niagara Falls.

C．Visitors can learn how Niagara Falls produces electricity.

D．Many companies built power systems around Niagara Falls in the 1890s.