1.Fossil fuel includes oil, coal and natural gas. All of them are........
A, renewable B, non - renewable C, abundant D, available
2, .................... energy is produced by cllecting sunlight and converting it into electricity
A, Hydro B, Nuclear C, Solar D, WInd
3, There are many available ......... power sources in Vietnam including sun, wind, water, etc
A, nuclear B, hydro C, renewanle D, solar
4, We just wear ........ on our back and we can fly
A, skytrain B, a teleporter C, a jetpack D, flying car
5, What should we do to ........ electricity ?
A, cut B, take C, save D, waste
