The number of people present at the meeting _______ two hundred and a number of them _______ from the countryside.

A．is, are

B．is, is

C．are, are

D．are, is

男．67岁．患高血压18年，2年前患急性前壁心肌梗死，门诊测血压22．7/13．3kPa(170)/100mmHg)．心率96次/分，该患者的最佳药物选择是

A．美托洛尔
B．维拉帕米
C．哌唑嗪
D．卡托普利
E．吲达帕胺