【C19】A．fuelB．oilC．coalD．wood

Lots of things are made of_____．We must protect_____． A．woods；woods B．wood；wood

白癣A.Wood灯下呈亮绿色荧光B.Wood灯下呈暗绿色荧光C.Wood灯下呈棕黄色荧光D.Wood灯下呈鲜红色荧

黄癣A.Wood灯下呈亮绿色荧光B.Wood灯下呈暗绿色荧光C.Wood灯下呈棕黄色荧光D.Wood灯下呈鲜红色荧

"Carbon neutral" in this passage refers to______.A．involving no use of coal as fuelB．produ

______is considered as a solid fuel in Ireland.A．TurfB．OilC．CoalD．Natural gas

【C5】A．logsB．trunksC．branchesD．wood