单项选择题 听力原文：You don't have to feel surprised. David always likes to fly in the face of the company's rules.What's special about David according to the speaker?A．David always likes to amend the rules of the company.B．David never breaks any rule of the company.C．David often reminds the others of observing the company's rules.D．David often challenges the rules of the company.

单项选择题 听力原文：Lesley pleaded guilty in January to fraud charges and is cooperating with prosecutors in a corruption probe that would implicate other officials.What of the following is true of Lesley?A．He was charged of committing fraud and is under a probe led by some officials.B．Some officials cooperated with the prosecutors to force him to plead guilty.C．He was charged of taking bribes as an official.D．Some officials are involved in the corruption scandal that is being investigated with the help of him.

单项选择题 患者，男性，23岁。高热，咳嗽，右侧胸痛一天就诊，胸部透视右下肺片状阴影。白细胞计数22×109／L，中性粒细胞90％。为了解患者的感染程度你还应注意观察（）