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.

    The Mid­Autumn Festival {#blank#}1{#/blank#} (celebrate) by the Chinese people all over the world every year. The moon is said to be its biggest and {#blank#}2{#/blank#} (bright) on this day. The Mid­Autumn Festival is {#blank#}3{#/blank#} special occasion for family. People eat many different kinds of moon cakes {#blank#}4{#/blank#} (include) fruit, coffee, chocolate, etc. The Lantern Festival falls on the fifteenth day of the first lunar month, {#blank#}5{#/blank#} marks the end of the Chinese New Year celebrations. There are many stories about how the Lantern Festival {#blank#}6{#/blank#} (start). Nowadays, most lanterns come in many {#blank#}7{#/blank#} (shape). People often eat sweet dumplings boiled and {#blank#}8{#/blank#} (serve) in hot water on this day. The Dragon Boat Festival, which started more than 2, 000 years ago, marks the {#blank#}9{#/blank#} (begin) of the hottest season of the year. There is a special food called zongzi {#blank#}10{#/blank#}the festival.

    English is a language {#blank#}1{#/blank#}(bring) to Britain in the 5th century by Anglo­Saxon settlers from various parts of Northwest Germany. It is convenient to divide English into three periods roughly─Old English, Middle English, and Modern English.

    The {#blank#}2{#/blank#}(early) form of English is called Old English or Anglo­Saxon. Old English developed from a set of North Sea Germanic dialects {#blank#}3{#/blank#}(origin) spoken along the coasts of Frisia, Lower Saxony, Jutland, and Southern Sweden by Germanic tribes known {#blank#}4{#/blank#} the Angles, Saxons, and Jutes. Later, Old English was strongly influenced by the North Germanic language Norse, spoken by the Vikings who settled mainly in the northwest. The most famous work from the Old English period is the epic poem Beowulf, written by {#blank#}5{#/blank#} unknown poet. Old English is very different from Modern English and difficult for the 21st­century English speakers to understand.

    For the 300 years following the Norman Conquest in 1066, the Norman kings and the nobility spoke only a {#blank#}6{#/blank#}(vary) of French called Anglo­Norman. English continued to be the language of the common people. The Norman influence {#blank#}7{#/blank#}(strong) the continual evolution of the language over the following centuries, resulting in {#blank#}8{#/blank#} is now referred to as Middle English. And one of the best­known works from the Middle English period is Geoffrey Chaucer's The Canterbury Tales.

    From the late 15th century, the language changed into Early Modern English, often dated from the Great Vowel Shift. English is continuously absorbing foreign words, especially Latin and Greek, causing English to have the largest vocabulary of any language in the world. By the late 18th century, the British Empire had sped the spread of English through its colonies and geopolitical dominance. Commerce, science and technology, diplomacy, art and formal education all contributed to English {#blank#}9{#/blank#} (become) the first truly global language. As there are many words from different languages, the risk of mispronunciation is high. In 1755, Samuel Johnson published his A Dictionary of the English Language, {#blank#}10{#/blank#} introduced a standard set of spelling conventions and usage norms.

    I was living a life in my screen and hardly noticed what {#blank#}1{#/blank#} (be) around me. I was always checking the time and thinking of future {#blank#}2{#/blank#} (plan). My thought was: "Who's going to text me now? What will I do next?" My bedtime routine was usually centered {#blank#}3{#/blank#} one thing: my phone. {#blank#}4{#/blank#} I went to sleep, I browsed through news websites and checked my emails. When I woke up in the middle of the night, I did the same thing. The problem with this was that I felt anxious every night.

    So when my friends invited me {#blank#}5{#/blank#} (go) for a long weekend camping without the cell service, I thought this was {#blank#}6{#/blank#} (exact) what I needed. Here's how {#blank#}7{#/blank#} (keep) away from my phone for 48 hours changed me and my way of life.

    Without my phone, I {#blank#}8{#/blank#} (fall) asleep listening to the songs of frogs and crickets. In the morning, I woke up {#blank#}9{#/blank#} (feel) energetic. Sitting by the river, riding a bike, or singing old songs, I truly enjoyed what I was doing.

    I felt free without my phone at weekend camp, {#blank#}10{#/blank#} changed me completely. I listened to what my body wanted instead of what my phone was telling me to do.