单选题 Daylight Saving Time begins on Monday, April 3, 2005. People in most parts of the United States will turn their clocks ahead one hour.
The official (正式的) time to turn your clock ahead is early in the morning, April 3. Two a.m. becomes three a.m. Sunday will have only 23 hours. (Most people changes their clocks before they go to sleep Saturday night.)
In the fall, people turn their clock back an hour. This saying helps people remember which way to turn the clock: "Spring ahead; fall back." (Spring and fall each have two meanings here.)
We use daylight Saving Time in order to save electricity (电) . We need one less hour of light from electricity each day in the summer.
Arizona, Hawaii, and parts of Indiana do not use Daylight Saving Time. Not every country uses Daylight Saving Time, either. Countries near the equator (赤道) have no reason to use Daylight Saving Time. Their hours of daylight and darkness are always nearly the same. There is no Daylight Saving Time in Japan, China, or India.
Countries south of the equator have quite different seasons. They are ending their Daylight Saving Time now.

单选题 Daylight Saving Time is used in most parts of the United States.

【正确答案】 A

【答案解析】[精析] [句意] 美国的大部分地区都使用夏令时。是非题。从原文 “People in most parts of the United States will turn their clocks ahead one hour．”“美国大部分地区的人都会将表调快一小时。”得知美国的大部分地区都使用夏令时。故选[A]。

单选题 Most Americans turn their clock ahead early in the morning of April 3, 2005.

【正确答案】 C

【答案解析】[精析] [句意] 大多数的美国人都在2005年4月3日清早把钟表调快。是非题。原文第一段中说“夏令时始于2005年4月3日。美国大部分地区的人都会将表调快一小时。”但是，没有提到“多数的美国人都在2005年4月3日清早把钟表调快”；第二段中有“正式调整你的钟表的时问是在4月3日的清早。多数人都会在周六晚上睡觉前调表。”也没有提到多少美国人是在什么时候把钟表调快的，因此选[C] 。

单选题 Daylight Saving Time is used in the summer.

【正确答案】 B

【答案解析】[精析] [句意] 夏季用夏令时。从原文中得知，夏令时起于4月初，一直持续到秋季，其中经过了春、夏和秋。因此此说法不符合原文。故选 [B]。

单选题 Daylight Saving Time on both sides of the equator begins at the same time.

【正确答案】 B

【答案解析】[精析] [句意] 赤道两侧的国家开始夏令时的时间相同。细节题。从文中的最后一段得知：赤道南部的国家有着不同的季节。因此，此说法与原文不符，故选[B]。