H Pilorie bacteria cannot be killed.

• A、True
  
  

• B、False
  
  

• C、Not Given
  
  

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Problems Caused by Using Computers

Long hours at the screen can cause     41    (ache) eyes,     42   (blur) vision and headaches,  experts say. In fact, eyestrain surpasses even wrist pain as the top physical  ___43__ (complain) among heavy computer users. When peering into the computer screen, the eye's focusing muscle is at constant tension. Like any muscle, it feels sore when  ____44___(overload) . And when someone spends a lot of time looking at something close, the eye muscle can get  ____45___(stick) on the near-focus setting and have difficulty relaxing, leaving the person    46    (temporary) nearsighted, a condition called accommodative spasm (痙攣) that can last seconds or hours. The letters on the screen are not as clearly  ____47___(define) as on a printed page. Take a magnifying glass to your monitor and you'll see the letters. each made up of pinpoint sources of light, have no sharp edges. But those liquid crystal display (LCD) monitors, like those found on laptop computers, are    48    (easy) on the eyes be-cause they display sharper images. And studies have shown that when people are working on a computer, their rate of  ____49___ (blink) goes down by two-thirds, which can result in dry, stinging eyes. This is especially a problem for contact-lenses    50    (wear) . 

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The Origin of Mother's Day

In the U. S. Mothers' Day is a holiday celebrated on the second Sunday in May. It is a day when children honor their mothers with cards, gifts, and flowers. First observance was in Philadelphia in 1907.   26   

Although it wasn't celebrated in the U. S. until 1907, there were days honoring mothers even in the days of ancient Greece.     27   

Later, in the 1600's, in England there was an annual observance called“Mothering Sunday".     28  On Mothering Sunday, the servants, who generally lived with their employers, were encouraged to return home and honor their mothers. It was traditional for them to bring a special cake along to celebrate the occasion.

Mother's Day was first suggested in the United States in 1872 by Julia Ward Howe as a day dedicated to peace. In 1907 Ana Jarvis, from Philadelphia, began a campaign to establish a national Mother's Day. Jarvis persuaded her mother's church in Grafton, West Virginia to celebrate Mother's Day on the second anniversary of her mother's death, the 2nd Sunday of May. The next year Mother's Day was also celebrated in Philadelphia.

Jaris and others began a letter-writing campaign to ministers, businessmen, and politicians in their quest to establish a national Mother's Day.  ____29____ President Woodrow Wilson, in 1914, made the official announcement proclaiming Mother's Day a national observance that was to be held each year on the 2nd Sunday of May.

 ____30____Denmark, Finland, Italy, Turkey, Australia, and Belgium celebrate Mother's Day on the second Sunday in May, as in the U. S.

 

A. Mother's day should not be just another day with a few flowers thrown in.

B. In those days, however, it was Rhea, the Mother of the gods that was given honor.

C. Many other countries of the world celebrate their own Mother's Day at different times throughout the year.

D. They were successful.

E. It was celebrated during June, on the fourth Sunday.

F. It is based on suggestions by Julia Ward Howe in 1872 and by Anna Jarvis in 1907.