17．---The weather repot says the temperature is going to drop sharply. Do remember to put on more clothes.

--- __________

A．Made it

B．Got it

C．Understood it

D．Heard it

皱鞘双条杉天牛以成虫蛀食树干，造成树木生长势衰退，是杉木的毁灭性蛀干害虫。