—When did you meet her last?

—I don’t remember exactly，but I’m sure it was ________ unforgettable Friday when I went for a walk after ________ wonderful lunch.

A．an；a

B．/；a

C．the；/

D．/；/

抓扬式挖泥船的挖深一般可达( )。

A．20m以下
B．30m以上
C．40m以上
D．20m以上