clocks forward an hour at 2 a．m. on the second Sunday in March and back an hour on the first Sunday in November. Some states, however, still do not apply DST, and in the past even some areas within individual states refused to observe DST while the rest of the state did.

It was originally thought that DST would reduce energy consumption as people would use less electric lighting in the evening due to the increased hours of daylight. However, recent studies have suggested that this benefit has been canceled out by the increased use of home air conditioners, which people use for longer on long summer evenings.

Brighter evenings have reduced the number of traffic accidents in countries which observe DST, but studies have also noticed a spike（剧增） in the number of accidents during the week after the clocks change, possibly due to the sudden interruption of people's sleeping patterns.

One certain good thing to come out of DST, however, happened in 1999, when a group of West Bank terrorists（on DST） delivered bombs to a cell in Israel（not on DST） but ignored the time difference when setting the timers for their bombs. The bombs went off one hour earlier than planned, killing three terrorists instead of the intended civilians.

33. Which of the following statements about DST is TRUE？

A. It was introduced from Germany to Britain after World War I.

B. It can help save energy and reduce traffic accidents.

C. It forces people to appreciate the sun more than the moon.

D. It probably affects people's sleeping patterns.

34. Terrorists should have set the bomb timers at ________（West Bank Time） for an 8：00 pm explosion in Israel.

A. 7：00 am

B. 7：00 pm

C. 8：00 pm

D. 9：00 pm

35. This passage can best be described as ________．