开口通知书应提前（）天送达测量业务部门。
A、1
B、2
C、3
D、4
参考答案：C
According to ________ People's Daily article, 40% of the lakes in Jiangsu have dried up in ________ past 30 years.
A．the；a
B．不填；the
C．a；the
D．不填；a
