考博考试

【单选题】 If said there were about 500, 000 visitors flocking to the city for the 3^rd International Avation and Aerospace Exhibition, that would be a ______ estimate--in fact there are probably a lot more.
A．constructive
B．conservative
C．affirmative
D．progressive

网考网参考答案：B
网考网解析：
conservative保守的；constructive建设性的；affirmative肯定的，乐观的； progressive前进的，进步的。 查看试题解析出处>>