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oids. 4 66. What do scientists mainly talk about the collision of an asteroid with Earth? A. It is very unlikely but the danger of its happening exists. B. Such a collision might occur once every 50 thousand years. C. Collisions of smaller asteroids with Earth occur more often than expected. D. It39。t take care of these asteroids, they39。t be cheap. Is it worth it? Two things experts consider when judging any risk are: (1) How likely the event is。t threaten us. But there are also thousands of asteroids whose orbits put them on a collision(碰撞) course with Earth. Buy $50 million worth of new telescopes right now. Then spend $10 million a year for the next 25 years to locate most the space rocks. By the time we spot a destructive one, the scientists say, we39。s heart cells B. women39。s heart could perform almost as well as a 20yearold one39。s hearts go into rapid decline when they reach middle age. The largest study of the effects of ageing on the heart has found that women39。s volleyball matches, who will most probably have trouble? A. The Chinese audience. B. Our women39。s influence over China far exceeds(超越) that of an ordinary player,” says the China Olympic Committee website. If Lang stands with the opponents(對(duì)手) during women39。s goal of winning the women39。t take the job, I have to give them enough time to find someone else. Lang, 45, won Olympic gold in 1984. She later coached the Chinese women to silver at the 1996 Atlanta Olympics and the 1998 World Championships. She has also coached at New Mexico University in the United States where her daughter was born and lives. The reaction in the Chinese media to Lang39。s professional volleyball league, told that she was considering the offer by the US Volleyball Association. Right now I39。s national team for the Beijing 2020 Olympics. But China39。 1 閱讀理解訓(xùn)練題( 四 ) A China39。s former volleyball star Lang Ping has been invited to coach the US women39。s sports media said the offer would be difficult to accept. Lang, who is presently coaching a club team in Italy39。m still considering their offer but I will answer them soon,”Lang said. If I don39。s job offer was swift and strong. Many say that if she takes the job it would be a direct challenge to China39。s volleyball medal at the Beijing Games. As an unusual player and a spiritual leader of Chinese volleyball, Lang Ping39。s volleyball matches, you can rest assured that this will be difficult to accept for the new Chinese players, difficult for coach Chen Zhonghe, who was once her assistant, and difficult for all Chinese watching on television,” the site continued.( AGENCIES Feb 9, 2020) 56. According to th