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 21st 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.

    Starting this September, freshmen at Tsinghua University will have to take swimming courses. They won't receive their degrees until they pass the test{#blank#}1{#/blank#}(success). Exceptions will be allowed for students with certain physical or mental conditions, if{#blank#}2{#/blank#}(prove) by medical staff.

    Actually, viewing the ability{#blank#}3{#/blank#}(swim) as a must for students is not something new to this university. It was a{#blank#}4{#/blank#}(require) in the early 20^th century. Later it{#blank#}5{#/blank#}(drop) due to a rising number of students and a lack of facilities（设施）.

    As for {#blank#}6{#/blank#}new rule, opinions vary greatly. Some students welcome it, saying it's a necessary skill {#blank#}7{#/blank#}can save lives, while others argue that it's not reasonable to link degrees {#blank#}8{#/blank#}swimming ability.

    In response to the negative reviews, Liu Bo, head of the Division of Sports Science, gave the following explanation. {#blank#}9{#/blank#}a water sport, swimming does less harm to joints（关节）and muscles and is helpful in improving students' endurance.{#blank#}10{#/blank#}(consequence) it's beneficial to students in the long run.

    It is reported {#blank#}1{#/blank#} over 100,000 people took part in a massive parade at Beijing's Tian'anmen Square {#blank#}2{#/blank#} the morning of Oct 1, National Day, {#blank#}3{#/blank#} (celebrate) the 70th anniversary of the founding of the People's Republic of China. "Participants from all walks of life and ethnic groups attended {#blank#}4{#/blank#}ceremony, Hong Kong, Macao and Taiwan compatriots(同胞), overseas Chinese and foreigners {#blank#}5{#/blank#}(include)", said Du Feijin, head of the publicity department of the Beijing Committee of the Communist Party of China. "Tian'anmen Square featured red decorations representing the {#blank#}6{#/blank#} (glory) history of the Party as it led the Chinese revolution to victory", he said, {#blank#}7{#/blank#} (add) that 70 red lanterns were hung parallel to the east and west sides of the square. A series of {#blank#}8{#/blank#} (active) like raising the national flag, singing the national anthem and commemorating revolutionary martyrs(烈士) held nationwide to let {#blank#}9{#/blank#} (many) people take part in celebrating the birthday of the motherland. Besides, a documentary which featured highlights during the 70-year journey {#blank#}10{#/blank#}(broadcast) on TV.

    The 7th CISM Military World Games(世界军运会)will take place from Oct. 18 {#blank#}1{#/blank#} Oct. 27，2019 in Wuhan, capital city of {#blank#}2{#/blank#}(centre)China's Hubei Province.

    The games，the top sports gala for military personnel(军人), include 329 competition events of 27 kinds , {#blank#}3{#/blank#} are expected to attract around 8000 players from more than 100 {#blank#}4{#/blank#} (country)and regions.

    The games will be an international event with great importance and far-reaching influence and it will also be {#blank#}5{#/blank#} opportunity for foreign military personnel {#blank#}6{#/blank#}(learn) more about China and its military.

    The event's emblem(会徽)is made up of a dove, a star, ribbons and other elements and the mascot is called Bing Bing, {#blank#}7{#/blank#} design is based on the Chinese sturgeon(鲟), a {#blank#}8{#/blank#} (serious)endangered fish known as the "panda in water". The slogan is "Military glory，world peace".

    The games, which {#blank#}9{#/blank#} (hold)in Rome in 1995 for the first time, are a multi-sport event {#blank#}10{#/blank#} (organize)every four years by the CISM.