To protect the environment and save energy, scientists are working hard to use s___ energy. 

If you want to go abroad for your holidays, you can telephone the travel a_______ to get some information.

Baths and bathing have long been considered of medical importance to man. In Greece there are the ruins(废墟) of a water system(系统) for baths built over 3,000 years ago. The Romans had warm public baths. In some baths, as many as 3,000 persons could bathe at the same time.

Treating disease by taking bathing has been popular for centuries. Modern medical bathing first became popular in Europe and by the late 1700’s  it has also become popular in the United States.

For many years, frequent(经常的) bathing was believed to be bad for one’s health. Ordinary bathing just to keep clean was avoided(避免), and perfume was often used to cover up body smells!

By the 1700’s doctors began to say that soap and water were good for health. They believed that it was good for people to be clean. Slowly, people began to bathe more frequently. During the Victorian Age of the late 19th century, taking a bath on Saturday night became common.

In the United States ordinary bathing was slow to become popular. During the 18th and early 19th centuries, many Americans were known as “The Great Unwashed!” In one American city , for example, a person was only allowed to take a bathe every thirty days! That was a law!

Frequency of bathing today is partly a matter of habit. People know that bathing for cleanliness is important to health, Doctors know that dirty bodies increase the chance of diseases. As a result, in the United States, people generally bathe often. Some people bath once a day at least. They consider a daily bath essential (=necessary) to good health.

41. Dirty bodies can ______ .

A. ruin one’s business              B. cause disease

C. drive customers away            D. cause good health

42. In the 18th century doctors believed that being clean was _______ .

A. unimportant     B. good for health     C. harmful    D. popular

43. The underlined word perfume probably means _______.

A. a sweet smelling substance          B. good health

C. a strange smelling substance       D. large wealth

44. Which  of the following gives the main idea of the passage?

A. Everybody in America takes a daily bath.

B. A bath a day keeps the doctor away.

C. Taking baths has become popular in the world.

D. Bathing has become easier and cheaper.

There was once a professor of medicine ，who was very strict with his students .Whenever he took the chair on the exam committee, the students would be in 21 , because he was seldom pleased with the 22 they gave .A student would be 23 enough if he or she could receive a good 24 from him. At the end of the term, the students of 25 would take exam again .Now a student 26   the exam room and got 27 before the committee. This student was a little 28 as he knew it would not be so 29to get through the exam at all.

The professor began to ask. The student was 30 to describe a certain illness, his description of which31 out to be OK .Then the professor asked about the 32 for illness, and the student, too, answered just as 33 . “Good,” said the professor, “and how much will you 34 the patient?” “A full spoon,” answered the student. “Now you may go out and wait for what you can get,” said the professor .At the same time the committee 35 carefully the answers the student had given. Suddenly the student noticed there was something wrong with his 36 answer. “A full spoon is too much,” he thought to himself. 37 he opened the door of the room and cried, “Mr Professor, I’ve made a 38 ! A full spoon is too much for the patient .He can only take five drops.”

 “I’m sorry, sir” said the professor 39 , “ but it’s too late .Your patient has 40 .”

What would you do if you got, ____, a million dollars?

A. tell      B. talk     C. speak     D. say

 --- Can I help you ?

--- I’d like to buy a present for my best friend, _______at proper price but of great use.

A. that       B. one        C. it               D. this

I found ______ possible to answer all the questions within the given time.

A. that      B. it       C. this      D. what

 ― He is said _______ in the United States for three years before he returned to his country.

― No wonder he speaks English so well.

A. to stay                     B. having stayed                   C. staying             D. to have stayed