【正文】 ases, therefore saving millions of lives. To solve this problem, a team of researchers from Australia and China analyzed bat DNA. The scientists studied two kinds of bats— the Australian megabat, known as the flying fox, and the Chinese microbat. The scientists then arranged the bat genome (基因組 ) in order by paring their DNA. The researchers now think that the special immunity (免疫性 ) to illness that bats have may be connected to their ability to fly. Bats are the only mammals (哺乳動(dòng)物 ) that can truly fly. Flying uses up a lot of energy. The energy burned for flying produces something in the animal called free radicals (自由基 ). Free radicals can damage DNA and lead to diseases such as cancer. However, bats are not affected by free radicals produced during flight. The reason is that bats carry special genes to repair any damaged DNA. Scientists think that because bats fly and produce free radicals, they’ve evolved to carry genes that shaped their special immune system. “We’re thinking that the evolution( 進(jìn)化 ) of flight led to a sort of effect, influencing not only the immune system but also things like aging and cancer,” says Chris, an expert of the Australian Animal Health Laboratory. “We think we’ve really found something special.” Researchers believe that this discovery might one day be key to helping humans fight diseases such as cancer that attack the immune system and damage DNA. 25. What’s true about bats according to the passage? A. They carry many deadly diseases like SARS so it’s easy for them to get sick. B. Bats are the only animals that can tell directions easily. C. Bats are among the mammals that can truly fly. D. Researchers studied bats to help save people. 26. According to researchers, bats can fight off many deadly diseases mainly because____ A. they have developed special immune system through evolution B. they are able to fly， which burns a lot of energy C. free radicals in their bodies can damage DNA and cause diseases D. they carry no special genes to repair damaged DNA 27. The passage is mainly about ________. A. bats and dangerous diseases B. bats and their special immune system C. free radicals and immune system D. ways to cure cancer C Cocoa Beach / Jupiter Surf CampSummer Summer Surf Camp Dates: ? Session 1 May 27th30th Family Surf Week(All Ages) ? Session 2 June 2nd6th Family Surf Week(All Ages) ? Session 3 June 9th13th Teen Week(Age1217) ? Session 4 June 16th20th Family Surf Week(All Ages) ? Session 5 June 23rd27th Adults Only (18 and over) ? Session 6 June30thJuly 3rd Family Surf Week(All Ages) ? Session 7 July 7th11th Family Surf Week(All Ages) ? Session 8 July 14th18th Women’s Camp(18 and over) ? Session 9 July 21st25th Family Surf Week(All Ages) ? Session 10 July 28thAugust 1st Adults Only (18 and over) ? A 20% discount will be used for the 4 Day Surf Camp Weeks. ? Parents are always wele to sign up and join their children during the teen week surf camp sessions. Summer Camp Details: ? Daily Rate: $ ? Surf Camp Runs: 9:30 am— 2:30 pm Please note: We don’t surpervise ( 監(jiān)督 ) the campers after 2:45 pm. Directions to Camp: Click here Contact Us: 8886724887 28. Where does this text probably e from? A. A newspaper B. A magazine C. A website D. A book 29. Who are allowed to take part in Session 5 and Session 8? A. Mr. Johnson and his wife B. A couple with his children C. Mr Black and his 19yearold son D. Mrs Black and her 21yearold daughter 30. If Mr and Mrs Brown want to join in the camp from June 30th to July 3rd, how much should they pay? A. $400. B.$800 C. $200 D. $950 31. What can we know from the form? A. The campers are supervised all day. B. A couple can sign up and join in the Camp by fax. C. Parents can take part in Session 3 together with their children. D. An adult can join in the camp on any day in June. D Britain39。t got any cash on me” when asked for money by beggars and Big Issue sellers.“Nothing39。m fine” came third followed by “You look lovely” and “Nice to see you”. Modern technology turned out to have contributed to many lies with “I didn39。ll give you a ring”, “We39。ll have to meet up soon”. “I39。t look big in that” pleted the top ten. In many cases perhaps it is better to delight someone with a fib than destroy someone with the truth, according to a spokesmanfor OnePoll, which carried out the research of 4,300 adults. He added: “ As a nation we just like trying to be nice and not upsetting people. Often little white lies can cover what we actually want to say. Most of these were considered pletely harmless. 32. “You l ook lovely” and “Sorry, I had no signal” ranked __________ on the popularlie list. A. fourth and tenth B. fourth and first C. third and tenth D. third and first 33. Most people think women are better liars because _______ A. fewer women liars are found out B. there’re more women liars C. women tell less harmful lies are harder to convince 34. “Our server was down” in Paragraph5 is perhaps a lie told as an excuse for not __________. A. inviti