How will our continuously growing population affect our way of life, our environment, even our planet? No matter how you look at it, we will face {#blank#}1{#/blank#}extremely serious problem. By the middle of the 21^st century, we {#blank#}2{#/blank#}(use) up all the oil that drives our cars if at the rate we're going. Even if scientists develop some new {#blank#}3{#/blank#}(way)of feeding the human race, the crowded conditions on the earth will make {#blank#}4{#/blank#}necessary for us to look for open space somewhere else. But none of the planets in our solar system are able  {#blank#}5{#/blank#}(support) life at present. One possible solution {#blank#}6{#/blank#}the problem, however, has recently been suggested by an American scientist, Professor Carl Sagan. His idea is {#blank#}7{#/blank#}before the earth's resources are almost exhausted, it will be  {#blank#}8{#/blank#}(total)possible to change the atmosphere of Venus（金星）and so create a new world almost as large as earth itself.

    However, {#blank#}9{#/blank#} his idea is turned into reality, humans have a long way to go. On the one hand, Venus is much {#blank#}10{#/blank#}(hot)than the earth; on the other hand, there is only a tiny amount of water there.

    It is reported {#blank#}1{#/blank#} gender (性别) differences exist mainly in terms {#blank#}2{#/blank#} sense of space and language ability. But that doesn't necessarily mean all women have a poor sense of space or all women are good at languages. Women can become excellent drivers as long as they have the courage to challenge {#blank#}3{#/blank#} (tradition) gender roles and believe in themselves.

    In London, only one in ten bus drivers is a woman. Yet, according to the results of recent research, women are better at {#blank#}4{#/blank#} (deal) with problem passengers, have fewer accidents and are quicker at learning to drive buses than men.

    Connie Wilson {#blank#}5{#/blank#} (become) a bus driver a year ago. “At first, driving {#blank#}6{#/blank#} bus was quite frightening,” she says. “I had no idea of the size of the vehicle or how {#blank#}7{#/blank#} (control) it. But after seven weeks of training, I passed the test first time. Trying to keep to the timetable when the traffic is heavy {#blank#}8{#/blank#} (be) not easy but I like the challenge! Some passengers can be rude, {#blank#}9{#/blank#} (especial) if they've had to wait a long time for the bus. But most are pleased to have a woman driver. There is no reason {#blank#}10{#/blank#} women can't do the job just as well as men. I'd say that to any woman.

    The first UN Chinese Language Day at the United Nations {#blank#}1{#/blank#}(observe) on Friday at UN Headquarters in New York in 2010. {#blank#}2{#/blank#}the world's most widely spoken language, it seems appropriate that Mandarin(普通话) has one day every year dedicated(把……专用于) to it. This{#blank#}3{#/blank#}(official)marked day of Mandarin language celebration was set by the United Nations as a way of {#blank#}4{#/blank#}(celebrate) the language's history and contributions to the world.{#blank#}5{#/blank#} is hoped that having one day every year to celebrate Mandarin will encourage more people around the world to take it up. With China likely to become the {#blank#}6{#/blank#}(large) economy in the world, it is important that the wider world becomes interestingly more perfect in this wonderful language. Every year UN Chinese Language Day {#blank#}7{#/blank#}(fall) on April 20. A great way {#blank#}8{#/blank#}(get) involved in the celebration is to join a Mandarin class or attend one of the Confucius Institutes(孔子学院){#blank#}9{#/blank#}are set up by China in countries around the world. The number of people learning Chinese is on {#blank#}10{#/blank#}increase in China's neighboring countries, such as Korea, Japan, and Vietnam.

    The following are some greatest artists or painters in the world.

    Pablo Picasso was considered {#blank#}1{#/blank#}（be）the greatest western artist of the twentieth century,{#blank#}2{#/blank#}was a Spanish artist. Picasso and another painter, George Braque, started Cubism.

    Roy Lichtenstein was{#blank#}3{#/blank#}contemporary American artist. One of{#blank#}4{#/blank#}（he） works is a world famous example of pop art. Pop art was an important modern art movement that {#blank#}5{#/blank#}（aim） to show ordinary twentieth-century city life.

    Qi Baishi was one of China's {#blank#}6{#/blank#}（great） painters. He followed the {#blank#}7{#/blank#}（tradition） Chinese style of painting. Chinese painting is known {#blank#}8{#/blank#}its brush drawings in black inks and natural colours. Qi Baishi's paintings are special because he observed the world of nature very{#blank#}9{#/blank#}（careful）.

    Xu Beihong was one of China's best-known twentieth-century{#blank#}10{#/blank#}（artist）.

    Like Qi Baishi, Xu painted in the traditional Chinese style and is most famous for his lively paintings of horses.

    Have you ever wondered{#blank#}1{#/blank#}children always seem to have bags of energy and never run out of steam? Researchers have discovered that children have the levels of recovery of endurance athletes. In fact, scientists say children's muscles recover from "high-intensity exercise" a lot{#blank#}2{#/blank#}(quick) than athletes. A study looked at the performance levels of children when they were cycling, and compared their fitness to {#blank#}3{#/blank#}of athletes. Researcher Dr Sebastien Ratel suggested they {#blank#}4{#/blank#} (find) the children used more of their aerobic metabolism and were therefore less tired during the high-intensity physical activities. The children also recovered very quickly-even faster than the well-trained adult endurance athletes.

    The researchers hope that{#blank#}5{#/blank#}(they) findings will help scientists have a better{#blank#}6{#/blank#}(understand) how the human body changes with age. It could lead to advances in the fight {#blank#}7{#/blank#} diabetes and other diseases. Dr Ratel said the research was{#blank#}8{#/blank#}(particular) important as more children were become less active. He warned: "With the diseases related to physical inactivity{#blank#}9{#/blank#}(rise), know the changes with growth that might contribute to the risk of disease. "{#blank#}10{#/blank#}is helpful for children to maintain their fitness as they grow up and play as much as they could so they remain healthy as adults.