空气和水是人类生活和生产不可缺少的自然资源。下列说法错误的是( )
空气中的二氧化碳是植物进行光合作用必需的物质
空气中的氧气能供给生物呼吸,支持燃料燃烧
地球上的水总储量虽然很大,但淡水很少,我们要节约用水
电解水实验说明了水是由 H 2 与 O 2 组成的
If you have a sore throat, you could drink some hot tea_____honey.( )
A.withB.atC.on
My English teacher took a photo of me while I______at the sports meeting. ( )
A.runB.was running
C.ran
What subject do you like____English, math or physics?
Of course, English( )
A.goodB.betterC.best
Who is singing in the next room?
It____be Lisa, but I'm not sure. ( )
A.mustB.mayC.need
This year is_____70th anniversary(周年)of the founding of the People's Republic of China.( )
A.aB.anC.the