In the early hours of Sunday, November 3,Daylight Saving Time(夏时制) 【小题1】 (come) to an end in most of America. People are supposed to turn their clocks back an hour. So, they will have one more hour to rest.

Daylight Saving Time is the【小题2】 (tradition)practice of moving the clocks forward one hour in Marchand【小题3】 (turn) them back again in November.Americans use【小题4】expression “spring forward,fall back”【小题5】(remember) which way to set their clocks.

American Benjamin Franklin first proposed the time change in 1784. He liked the idea of moving clocks forward to take advantage【小题6】more sunlight during the summer 【小题7】 (month).

In 1915,Germany and Britain agreed to the time change during World War I. When the United States entered the war, Congress 【小题8】 (pass) a law in 1918 to adopt Daylight Saving Time. The practice ended in1920【小题9】American farmers objected it, but returned in 1942 after the U.S. entered World War II.

The idea behind Daylight Saving Time was to save energy. With more sunlight later in the day, people would use less electric lighting.【小题10】,scientists now say people use even more energy to operate air-conditioners for the long, hot days of summer.

When skateboarding (滑板运动) started in 1960s, skateboards 【小题1】(make) of wood and had clay wheels. Since the wheels didn’t hold the concrete firmly, the riders could do very few tricks with them. In 1973, a new wheel made of a plastic 【小题2】(call) urethane (氨基甲酸乙酯) was invented in California. A skateboard 【小题3】 these wheels moved very quickly and it also held the concrete well. During the next few years, skateboards were 【小题4】(far) improved. The urethane was perfected, and the boards were shaped better. These skateboards gave new life to skateboarding.

Although skateboarding was easy 【小题5】(ride), the streets weren’t safe for it. As a result, skateboard parks sprang up. The first parks 【小题6】(appear) in California and Florida. But at first there were only outdoor parks 【小题7】 had concrete slopes with small curves (曲面). The more exciting parks appeared which had steep downward slopes, banked curves 【小题8】 vertical walls. Today there are both indoor and outdoor parks where the riders must wear helmets as well as knee and elbow pads, which can avoid serious injury when 【小题9】 rider falls down. Whenever they ride, people should always use the safety 【小题10】(equip). Many accidents happen during the first week of riding, so it’s of vital importance to learn how to fall safely.

Archaeologists(考古学家) have discovered over 6000 ancient tombs in Chengdu, Sichuan. The tombs date 【小题1】 various dynasties and were discovered during 【小题2】 (construct) works for the Xinchuan Park. The tombs range from the Warring States Period, the Qin Dynasty, the Han Dynasty, the Ming Dynasty to the Qing Dynasty.

Most of the tombs are put into 【小题3】 small cliff(悬崖) cave or constructed from stones and have contained tens of thousands of 【小题4】 (piece) of glass, coins and stone works. The team have also discovered cultural remains such as stone statues, 【小题5】 (paint) figures and mini pottery houses.

One special discovery is a 【小题6】 (relative) well-preserved tomb from the late Han Dynasty named the M94 Cliff Tomb, 【小题7】 (contain) 86 burial objects and hundreds of coins. “The tomb has 【小题8】 (high) historic and research values compared with those found before, because it 【小题9】 (help) shape the burial traditions and ceremonies of the late Han Dynasty,” said Zuo Zhiqiang, 【小题10】 led the archaeological team.