On seeing the damage he had done to his kind neighbor’s house, the child felt______.

 No one knows exactly when our ancestors started talking, but new evidence suggests that____ might have happened a long time ago.

He did well in the examination. He _____ hard at his lessons..  

If you insist on driving like this, you will have to suffer the ____ sooner or later.

 The child, who has a gift for sports, might make a first-class tennis player if given chances to develop her ______.

--- Don’t waste any paper, because our forests ____ every day.

----Sorry, I didn’t know that.

 Look! What a mess the room is! In my opinion, it needs ______.

________ in Tibet for ten years, he has been accustomed to the life and the climate there.

完形填空（共15分，每小题1分）

During college, I took a history class to fulfill a requirement.

The professor was a   32   fellow with red hair. He would walk   33   into the room wearing his winter coat, once not even   34   the hat during the lecture. He could not feel free in class and controlled the   35  just by looking through his glasses at his students.

So I  36   a little game for myself. I would try to find something in his lecture to ask him an intelligent question about,­­­   37   me to pay attention. He was obviously pleased to have a question to answer. In fact, his answers were always   38   .

I continued to do this every day and found myself actually enjoying the material. The professor seemed to become more   39   and some of the other students even   40  from time to time. My little game had saved me from being bored, as it was designed to do. And, I learned quite a bit about ancient world history. In spite of his strange   41  , he was indeed quite an expert in his field.

On the last day of the class we gathered our   42   and headed for the door. The shy, red-haired professor stepped directly in front of me,   43   I reached the door, and put his hand out. He said, “I want to thank you for making my classes so interesting,” as he shook my hand warmly and   44   for the first time. I was so   45  . To me, it had been a pleasant way to pass the time. I had no idea that all of my questions asked in class had any effect on him or the others at all.

Each of us, through the things we say and do, and the kindness we can freely   46,   can have a great effect not just on our own experiences, but on those of others.

.Can you imagine your doctor warning that taking a bath could be unhealthy? In the early 1800s, many doctors thought that bathtubs(浴缸) could carry diseases, so they advised against their use. The advice wasn’t based on personal experience, because few of the doctors owned bathtubs. The White House did not even have a bathtub until 1851.

In the 19th century, only one home out of six had a bathroom. A child took only one bath a week. On Saturday nights, children all lined up for their turns to wash in a wooden bathtub in the kitchen. Mothers had to boil the water on the stove and carry it over to fill the bathtub. It’s no wonder that children could not jump into a bathtub as they do today.

When the first bathtubs were introduced, even their makers weren’t sure whether the new fashion would last. They advertised their products as water containers that “could be used as bathing tubs”.

The bathtub became popular in America shortly after World War I. By then most middle-class families had indoor taps. At first most bathtubs were made of wood, but as the popularity of the product increased, so did the creativity of bathtub makers. Before porcelain(瓷) bathtubs there were rubber ones like the plastic swimming pools kids use today. In the past few years owners often invited guests to see them. They told their friends how wonderful baths in these bathtubs could be.

Now doctors no longer warn that bathtubs carry diseases. Instead, they tell their patients about the benefits of frequent bathing in the bathtubs. Maybe one of the best reasons why doctors encourage frequent trips to the bathtub is that bathed patients smell better!

47. Many doctors in the past were against using bathtubs because ______.

A. they didn’t have their own bathtubs

B. they thought bathtubs could carry diseases.

C. the children might hurt themselves in the bathtubs

D. bathtubs were too expensive for the common families

48. Why couldn’t children jump into a tub in the 19th century as they do today?

A. It was unhealthy to do so.      B. The bathtubs were not enough.

C. Mothers were always busy.     D. The bathtubs were made of wood.

49. Which of the following is true according to the text?

A. Some different materials can be used to make bathtubs.

B. In the 19th century only one home out of seven had a bathroom.

C. The bathtub became popular when they were introduced to the market.

D. Children prefer the bathtubs made of plastic to those made of porcelain.

50. It can be inferred from the last paragraph that ______.

A. all the doctors have bathtubs in their homes

B. the doctors have realized the advantages of bathtubs

C. the doctors will make lots of money by advertising bathtubs

D. the patients should take a bath before going to see a doctor