—Tongren Daily Paper! Today’s Tongren Daily Paper!

“Students’ nutrition (营养)meal will be done research(调研)for in Tongren City.”

—______ exciting news!

A．What a

B．What an

C．What

D．How

当矿井发现瓦斯、煤尘爆炸时，要沉着冷静，采取措施进行自救。具体方法是：面向空气颤动的方向，仰卧倒地，用毛巾捂住口鼻，防止把火焰吸入肺部。