Tom and Mike are good friends. They are good to kids. They want to find summer jobs. One day Tom tells Mike that Beidaihe Kids Summer Camp needs help with sports, music and computers. They are both very glad to hear this.

    Tom can play basketball and volleyball, and he can swim, too. Mike can play the violin, the drums and the guitar, and he also likes soccer. Tom and Mike like computers very much. Can they join the Summer Camp?

    When the weather is hot, you go to a lake or an ocean. When you are near a lake or an Ocean, you feel cool. Why? The sun makes the earth hot, but it cannot make the water very hot. Although the air over the earth becomes hot, the air over the water is still cool. The hot air over the earth goes up. Then the cool air over the water moves in and takes the place of the hot air.

    Then you may ask, "Why is the ocean full of salt?" Scientists will say that the salt comes from the rocks. When the rocks get very hot or very cold, they crack (爆裂). Rain falls into the cracks. The rain then carries the salt into the earth and into the rivers. The rivers carry the salt into the ocean. And then you may doubt, "But the ocean does not get more salty every year. Scientists are not sure about the answer to this question.

    We know a lot about our world. But there are still many answers that we do not have, and we are curious about them.

In the western world, Chinese takeout with rice and fortune cookies(幸运饼干) is a popular kind of food. But this kind of Chinese food isn't very authentic(正宗的), it is very {#blank#}1{#/blank#}[̍dIfrənt] from real Chinese food. Now over the years, real Chinese{#blank#}2{#/blank#}(dish) have become more popular in foreign countries as well.

Chinese people who live {#blank#}3{#/blank#}[ə̍ brɔːd] introduced many of them. Some have been popular in foreign countries for many years, {#blank#}4{#/blank#}others are new, like tanghulu. It is a traditional Chinese snack that's made{#blank#}5{#/blank#}fruit, usually Chinese hawthorns(山楂). The fruit is stuck on a stick of bamboo. Then it is {#blank#}6{#/blank#}(cover) with sugar syrup(糖浆), which becomes hard after it cools down.

Wang Jialiang, a tanghulu vendor(摊贩) from China, sold 8, 000 sticks in Russia {#blank#}7{#/blank#}one day. Tanghulu made him{#blank#}8{#/blank#} [̍ feIməs] in Russia, with his picture{#blank#}9{#/blank#}(appear) in the local newspaper. In the Russian city of Vladivostok, the deputy mayor(副市长) is a big fan of the snack, always coming to buy it {#blank#}10{#/blank#}(he)from Wang Jialiang.

    In Britain you're allowed to drive a car when you're seventeen. You have to get a special two-year driving license before you start. When you're learning, someone with a full license always has to be in the car with you because you aren't allowed to drive the car on the road alone. You don't have to go to a driving school—a friend can teach you. The person with you isn't allowed to take money for the lessons unless he's got a teacher's license. 

    Before you're allowed to have a full license, you have to take a driving test. You can take a test in your own car, but it has to be fit for the road. In the test, you have to drive round for half an hour and then answer a few questions. If you don't pass the test, you're allowed to take it again a few weeks later. In 1970, a woman passed her fortieth test after 212 driving lessons! When you've passed your test, you're allowed to go on driving if you like, and you must be healthy. Britain's oldest driver was a man who drove in 1974 at the age of 100. 

    Before 1904, everyone was allowed to drive, even children. Then from 1904 car drivers had to have a license. But they didn't have to take a test until 1935. In the early days of car driving, before 1978, cars weren't allowed to go faster than four miles an hour, and someone had to lead the car with a red flag.