Living habits make a person healthy, wealthy and wise. We should        in daily life.

① put litter into the dustbin

② stay up reviewing lessons all the time

③ go to school without breakfast

④ wash hands before meals

⑤ open the window and take a fresh breath as often as possible

A. ①④⑤             B. ②③④               C. ①②⑤

槽探工程一般不超过（）米。