考博考试

【单选题】 In the third paragraph , "three weeks of round-clock effort" means ______.
A．for three weeks the hospital was taking in SARS patients without stopping
B．Dr Urbani worked day and night for three weeks, trying to get SARS under control
C．for three weeks Dr. Urbani did not have any time to sleep, trying hard to fight the new disease
D．After three weeks hard work to control SARS, the hospital superior thought it was time to stop the clock

网考网参考答案：B
网考网解析：
由第二段的最后几句话可以看出来；在这三个星期里，Dr．Urbani是在帮助医院采取控制措施。 查看试题解析出处>>