冠心病的危险因素有（）
A.TG升高
B.LDL-C升高
C.TC升高
D.HDL-C降低
E.LPA.升高
参考答案：A, B, C, D, E
With the word “ PM2.5” _________ appearing in media reports, people pay greater attention to it and seek health tips for smoggy days.
A．constantly
B．consequently
C．permanently
D．immediately
脚手架杆件（）钢木混搭。
A.严禁
B.可以
C.必须
D.不宜
