问题 选择题

肉在冰箱中长时间不易腐烂,主要原因是(    )

A.盐分多,不利于细菌的生长和繁殖

B.空气中没有飘浮着的细菌

C.气温低,不利于细菌的生长和繁殖

D.大多细菌是对人类有益的,不会使肉腐烂

答案

答案:C

题目分析:因食物腐败变质是由于微生物的生长和大量繁殖而引起的,根据食物腐败变质的原因,食品保存就要尽量的杀死或抑制微生物的生长和大量繁殖,将食物放在冰箱中就是利用冰箱内的低温环境,低温不能杀所有死细菌,只是抑制了细菌的生长和繁殖,来达到较长时间保存的目的。

点评:此题为基础题,可结合生活实际与食品的保存方法进行记忆。

单项选择题
阅读理解

阅读理解。

                                                                   

     The first newspapers were written by hand and put up on walls in public place. The earliest daily newspaper

was started in Rome in 59 BC. In the 700's the world's first printed newspaper was published. Europe didn't

have a regularly published newspaper until 1609, when one was started in Germany.

     The first regularly published newspaper in the English language was printed in Amsterdam in 1620. In 1621,

an English newspaper was started in London and was published once a week. The first daily English newspaper

was the Daily Courant (每日新闻). It came out in March 1702.

     In 1690, Benjamin Harris printed the first American newspaper in Boston. But not long after it was first

published, the government stopped the paper. In 1704, John Campbell started The Boston Newsletter (波士顿

新闻通讯), the first newspaper published in the American colonies. By 1760, the colonies had more than thirty

daily newspapers. There are now about 1,800 daily papers in the United States.

     Today, as a group, English language newspapers have the largest circulation (发行量) in the world. But the

largest circulation for a newspaper is that of the Japanese newspaper Asahi Dhimbun (朝日新闻). It sells more

than 11 million copies every day.

1. The first regular published newspaper in Europe was printed in _____.[ ]

A. England

B. Germany

C. France

D. Sweden

2. The first printed newspaper in America came out in _____. [ ]

A. Washington

B. New York

C. Boston

D. New Orleans

3. Which is NOT true according to the passage? [ ]

A. The first regularly published newspaper in the English language was printed in Amsterdam.

B. English language newspaper sells more than 11 million copies every day.

C. Europe didn't have a regularly published newspaper in 1608.

D. The first daily English newspaper came out in March 1702.