问题
选择题
Most air pollution is caused by the burning of ____ like coal, gas and oil.
A．fuels
B．articles
C．goods
D．products
答案
答案：A
fuel燃料，题干中coal, gas, oil均为燃料。
搜题请搜索小程序“爱下问搜题”
Most air pollution is caused by the burning of ____ like coal, gas and oil.
A．fuels
B．articles
C．goods
D．products
答案：A
fuel燃料，题干中coal, gas, oil均为燃料。