Time库中休眠函数是（） A: Strftime B: strptime C: time.daylight（） D: time.sleep（）

Which of the country does not participate the Daylight Saving Time?

At this time, much of the northern hemisphere receives the most hours of daylight

Daylight saving time was instituted to increase productivity.() A: reorganized B: started C: encouraged D: taught

When did Daylight Saving Time become observed nationally A: In 1966. B: In 1960. C: In 1948. D: In 1939.

46.___ A: To standardize daylight saving time. B: To establish year-round daylight saving time. C: To abolish daylight saving time. D: To shorten daylight saving time.

Questions 11-13 are based on the following talk about the history of daylight saving time. According to the speaker, what was the effect of the Uniform Act of 1966 A: To standardize daylight saving time. B: To establish year-round daylight saving time. C: To abolish daylight saving time. D: To shorten daylight saving time.

Daylight Saving Time begin at 2 A: m. ______ in the United States every year.A. on the last Sunday of AprilB. on the first Sunday of AprilC. on the last Sunday of MayD. on the first Sunday of May

Why did one scientist expose birds to artificial daylight（） A: To test the relationship between daylight and a disease of the glands common to birds. B: To test the relationship between daylight and migration. C: To test the relationship between migration and temperature. D: To test the relationship between daylight and changes in the season.

7. Daylight was scarcely visible through the ________window-panes.