Can you imagine traveling to work in a one – man submarine? Some scientists believe that some day one – man submarines will be as many as automobiles are today．A famous French driver says, “One day soon, men will walk on the ocean floor as they do on the street!” Perhaps during your lifetime people will travel, and live in the sea．

If human beings want to live in the ocean, many human problems will need to be studied first.

Some of these problems, similar to those of living in outer space, are pressure, lack of oxygen and weightlessness. Many questions are still unanswered．For example, can our blood make itself fit for underwater surroundings? What will happen to our muscle if we live in the water very long? Scientists are looking for answers．

Perhaps in the future man will live in the sea, away from the crowded and noisy cities on land．Then sea has plenty of space, not only for floating living buildings and parks, but also for storing supplies and for underwater travel．

Some scientists believe that ocean living will benefit man in more than physical ways. In the freedom and beauty of the deep sea, man may find new sources of joy．

1.What can we do if we live in the ocean?  (    )

A．We can have plenty of oxygen．

B．We can be fit to live in the water very well．

C．We needn’t worry about things like weightlessness．

D．We can travel and work in the sea．

2.Why do some people hope to leave cities to live in the sea? Because_____．  (    )

A．people think they can live crowdedly in the sea

B．people wish to go the quiet seafloor to travel for several days

C．people want to break away from the crowded and noisy cities where they live now

D．only in this way can people get rid of noise pollution

3.In what ways could ocean living be helpful for man?  (    )

A．People can swim freely as much as possible．

B．People can be interested in the new pleasure there isn’t anywhere else．

C．The sea can supply people with enough foods and other things, so people needn’t work．

D．People can go boating and go to the park as often as possible．

4.Which of the following is the similar problem as that of living in outer space?  (    )

A．We are short of oxygen．

B．We are not familiar with the underwater surrounding．

C．We may die of weightlessness．

D．We can finds new joys．

5.Which of the following statements is true according to the passage?  (    )

A．The scientists have not solved the problem of weightlessness underwater．

B．The scientists have solved the problem of weightlessness when man live in space．

C．Some scientists believe that ocean living will benefit man in no more than physical ways．

D．Sea has plenty of space only for floating living buildings and parks．

During a state of deep relaxation, several physiological changes take place in the body: the body’s oxygen consumption is reduced; the heart beat decreases; muscle tension and sweating ease, and there is decreased sympathetic （交感的） nervous system activity．This restful state not only allows the body to repair and restore itself, but it has a calming effect on the consciousness．
How to achieve this state of relaxation, however, is a matter of opinion, and in some medical circles, a matter of controversy．A recent report by Dr．David Holmes of the University of Kansas in the journal “American psychologist” said that simply sitting in an armchair has just as many beneficial characteristics for the body as meditation （冥想） does．Researchers of other relaxation techniques disagree．These experts believe that more structured techniques, such as meditation, lead to a condition of deep relaxation．
The debate goes on, but one thing appears to be clear: the relaxation response can be reached by a number of methods, and the methods themselves are not as important as getting there．One day, one method may work best; on another day, an alternative method may be more appropriate．Once you are aware of all the methods, you can find the one that works best on you．
Some of the relaxation techniques are meditation, auto analysis and progressive muscle relaxation response．More than just sitting quietly in a chair, they have the added benefit of structure and discipline, and for these reasons appear to be more effective for most individuals．

1. 1.

   According to the passage, which of the following statements is NOT true when a person is in a state of deep relaxation?

   1. A.
      The body takes in less oxygen．
   2. B.
      The heart beats less frequently．
   3. C.
      Muscles become tense and the body sweats easily．
   4. D.
      The consciousness becomes more or less calmed．
2. 2.

   People seem to agree that ____．

   1. A.
      sitting in an armchair benefits a person as meditation does
   2. B.
      structured relaxation techniques are more beneficial for a person
   3. C.
      to achieve a state of deep relaxation is possible through various means
   4. D.
      what people are all struggling for is a state of deep relaxation
3. 3.

   In the third paragraph, the phrase “getting there” means _____．

   1. A.
      arriving at one’s destination
   2. B.
      getting what one wants most
   3. C.
      finding out a suitable relaxation technique
   4. D.
      reaching a state of deep relaxation
4. 4.

   The author’s attitude toward relaxation discussed in the passage is best described as ______．

   1. A.
      sceptical
   2. B.
      objective
   3. C.
      optimistic
   4. D.
      critical