With the development of technology, ________ of electronic products have been dropped by 30 percent.
A.results B.costs C.feelings D.roles
Many factories will try their best to ________ waste water in order to save natural resources.
A.pollute B.recycle C.protect D.use
(2019石家庄43中二模)All players are in different ________， but each of them has a chance to be the winner.
A.messages B.levels C.members D.menus
(2019邢台19中一模)It is very harmful to use ________ bags. We should take our own bags to go shopping.
A.plastic B.wooden C.ugly D.soft
(2019株洲改编)The world is changing with every second; and China, too, ________ with every second.
A.is changing B.had changed C.changed D.changes
The villagers expect that the building of the bridge ____ before the rainy season comes.
A.is completed B.was completed C.will be completed D.has been completed
