四级听力复合听写模拟训练第15套_大学英语听力

四级听力复合听写模拟训练第15套

　　Section C

　　Directions: In this section, you will heat a passage three times. When the passage is read for the first time. you should listen carefully for its general idea. When the passage is read for the second time. you are required to fill in the blanks numbered.from 36 to 43 with the exact words you have just heard. For blanks numbered from 44 to 46 you are required to fill in the missing information. For these blanks, you can either use the exact words you have just heard or write down the main points in your own words. Finally. when the passage is read for the third time. you should check what you have written.

　　注意：此部分试题在答题卡2上;请在答题卡2 上作答。

　　Part Ill Section C

　　Scientists have developed a new cancer drug. So far, they have tested it only on __ animals. The drug is designed to __ and kill cancer cells but not healthy cells.

　　First, the drug enters the cancer and destroys the supply of blood. Then it releases __ to destroy the cancer cells.

　　Researchers at the Massachusetts Institute of Technology in Cambridge carried out the study. The __ appeared in Nature __. A school news release called the drug an anti-cancer smart bomb.

　　Ram Sasisekharan is a professor at M.I.T. He says his team had to __ three problems. They had to find a way to destroy the blood vessels, then to __ the growth of new ones. But they also needed the blood vessels to supply