一个滴水的水龙头一天要白白流掉0.25吨水.如不及时修理,六月份会浪费掉多少吨水?
6月份有30天,
0.25×30=7.5(吨).
答:六月份会浪费掉7.5吨水.
his play, , is very wonderful: there are many interesting characters in it.
A.out of the question
B.on the whole
C.in doubt
D.under no condition
下列行为哪几项不属于心理健康的范围()
①见人都热情相待
②见什么人说什么话
③经常努力工作
④经常保持乐观的心态
A.①
B.①②
C.①②③
D.①②③④