攻克雅思阅读 10.doc

攻克雅思阅读 10.doc雅思阅读实战训练(十)
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new weapon to fight cancer
1. British scientists are preparing to launch trials of a radical new way to fight cancer, which kills tumours by infecting them with viruses like mon cold.
2. If essful, virus therapy could eventually form a third pillar alongside radiotherapy and chemotherapy in the standard arsenal against cancer, while avoiding some of the debilitating side-effects.
3. Leonard Seymour, a professor of gene therapy at Oxford University, who has been working on the virus therapy with colleagues in London and the US, will lead the trials later this year. Cancer Research UK said yesterday that it was excited by the potential of Prof Seymour‘s pioneering techniques.
4. One of the country‘s leading icists, Prof Seymour has been working with viruses that kill cancer cells directly, while avoiding harm to healthy tissue. "In principle, you‘ve got something which could be many times more effective than regular chemotherapy," he said.
5. Cancer-killing viruses exploit the fact that cancer cells suppress the body‘s local immune system. "If a cancer doesn‘t do that, the immune system wipes it out. If you can get a virus into a tumour, viruses find them a very good place to be because there‘s no immune system to stop them replicating. You can regard it as the cancer‘s Achilles‘ heel."
6. Only a small amount of the virus needs to get to the cancer. "T