问题

.If we humans beings continue to waste and destroy natural resources without using _____ energy, such as the energy from the sun, wind and water, our earth will be done for.

A:alternative
B:solar
C:conventional
D:recycled

正确答案是：

同类题型

My teacher encouraged me ________ moreconfident.

The girl ___on the ground ___to me that she had ____thebook on the shelf.

Dear, I have an important meeting tomorrow.—It doesn’t matter. If you _______ go to the movie tomorrow, I _______ my friend to go with me.

They ______ tennis yesterday afternoon.

At the 2013 press conference the Chinese foreign minister _______that China was strongly against the terrorism.