2009年英语专业四级考试真题及答案

PART III CLOZE [15 MIN]Decide which of the choices given below would best complete the passage if inserted in the corresponding blanks. Mark the best choice for each blank on Answer Sheet Two. Scientists around the world are racing to learn how to rapidly diagnose, treat and stop the spread of a new, deadly disease. SARS -- Severe Acute Respiratory Syndrome --- was (31) ____ for the first time in February 2003 in Hanoi, (32) _____ since then has infected more than 1,600 people in 15 countries,