每题1分,共7分 1、 阅读下面这篇短文，短文后列出7个句子，请根据短文的内容对每个句子做出判断。如果该句提供的是正确信息，请在答题卡上把A涂黑；如果该句提供的是错误信息，请在答题卡上把B涂黑；如果该句的信息文章中没有提及，请在答题卡上把C涂黑UsingHIV Virus to Cure CancerScientistsare planning to use human immunodeficiency(免疫缺陷)virus(HIV),one of mankind’s most feared viruses, as a carrier ofgenes which can fight cancer and a range of diseases that cannot be cured. Theexperts say HIV has an almost perfect ability to avoid the body’s immune(免疫的)defenses, making it ideal forcarrying replacement genes into patients’bodies, according to the Observer.Ateam at the California-based Salk Institute, one of the world’s leadingresearch centers on biological sciences, has created a special new breed of HIVand has started negotiations with the U>S> Food and DrugAdministration(FDA)to begin clinical gene therapy(治疗) trials this year. The first trials are expected to involvepatients suffering from cancers that cannot be cured by surgery althoughproject leader Professor Inder Verma said the HIV technique would have” far wider applications”.Theplan remains very likely to cause controversy since it involves making use of avirus which has caused more than 22 million deaths around the world in the pasttwo decades. Verma said that the idea of using HIV for a beneficial purpose was“shocking” but the fierce nature of HIV had disappeared by having all six ofthe potentially deadly genes removed.Illnessessuch as various cancers are caused when a gene in a patient’s body fails to work properly. In the past two years,breakthroughs in genetics(遗传学)have led gene therapyscientists to try and replace the genes that do not function normally.Unfortunately,the body’s immune defenses have been known to attack the modified genes andmake them lose their effects before they can start their task and progress inthe field has been held up by the lack of a suitable carrier.TheHIV virus has the ability to escape from, and then destroy, the immune defensecells designed to protect our bodies and this makes it attractive to scientistsas a way of secretly conveying replacement genes into patients’ bodies.
1FDA has approved the plan ofusing HIV to cure cancer in humans.
2Theidea of using HIV for a beneficial purpose has been widely accepted.
3HIVcan be safely used to cure cancer only if the deadly genes have been removed.
4TheHIV virus is an excellent warrior to fight the body’s immune cells.
5Othercountries are also expected to begin clinical gene therapy trials soon.
6Itis the lack of money that has held up the progress in using replacement genesto cure cancer.
7TheHIV virus has caused more deaths in developed countries.
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