汽车在出厂前要进行测试，某次测试中，先让汽车在模拟山路上以8m/s的速度行驶500s，紧接着在模拟公路上以20m/s的速度行驶100s．求：

（1）该汽车在模拟山路上行驶的路程．

（2）汽车在这次整个测试过程中的平均速度．

在河面上方20m的岸上有人用长绳拴住一条小船，开始时绳与水面的夹角为30°．人以恒定的速率v=3m/s拉绳，使小船靠岸，经过5s后，（sin53°=0.8，cos53°=0.6）

求：

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What's On?

Electric Underground

7:30pm－1:00am   Free at the Cyclops Theatre

    Do you know who's playing in your area? We're bringing you an exciting evening of live rock and pop music from the best local bands. Are you interested in becoming a musician and getting a recording contract (合同)? If so, come early to the talk at 7:30pm by Jules Skye, a successful record producer. He's going to talk about how you can find the right person to produce your music.

Gee Whizz

8:30pm-10:30pm   Comedy at Kaleidoscope

    Come and see Gee Whizz perform. He's the funniest stand-up comedian on the comedy scene. This joyful show will please everyone, from the youngest to the oldest. Gee Whizz really knows how to make you laugh! Our bar is open from 7:00pm for drinks and snacks (快餐).

Simon's Workshop

5:00pm-7:30pm    Wednesdays at Victoria Stage

    This is a good chance for anyone who wants to learn how to do comedy. The workshop looks at every kind of comedy, and practices many different ways of making people laugh. Simon is a comedian and actor who has 10 years' experience of teaching comedy. His workshops are exciting and fun. An evening with Simon will give you the confidence to be funny.

Charlotte Stone

8:00pm-11:00pm Pizza World

    Fine food with beautiful jazz music; this is a great evening out. Charlotte Stone will perform songs from her new best-selling CD, with James Pickering on the piano. The menu is Italian, with excellent meat and fresh fish, pizzas and pasta (面食). Book early to get a table. Our bar is open all day, and serves cocktails, coffee, beer, and white wine.

 Different countries have different customs. When you are in different countries, you should follow their customs.

 In China, it`s impolite to talk when eating dinner. And you`re not supposed to start eating first if there are older people at the table.

Very often people who travel to the United States forget to tip(付小费). It is usual to tip waiters, taxi drivers and porters who help carry your bags. Waiters expect to get a 15% tip on the cost of your meal. Taxi drivers expect about the same amount.

 In England, make sure to stand in line even if there are only two of you. It`s important to respect(尊重) lines there. It`s a good idea to talk about the weather. It`s favorite subject of conversation with the British.

 In Spain(西班牙)，it`s a good idea to have a light meal in the afternoon if someone invites you for dinner. People have dinner very late ,and restaurants do not generally open until after 9:00 pm.

 In Saudi Arabia(沙特阿拉伯)，men kiss one another on the cheek(脸颊).Your  host may welcome you with a kiss on both cheeks. It is polite for you to do the same.

 In Japan, people usually give personal or business cards to each other when they meet for the first time. When a person gives you a card, don`t put it into your pocket(口袋) as soon as you get it. The person expects you to read it.

 Don`t forget to be careful of your body language to express something in conversations. A kind of body language that is acceptable in one culture may be impolite in another.