(report报告;umbrella雨伞)
Cities
Weather
Beijing
It's sunny, but it will be ____ in the afternoon.
Qingdao
The weather is fine and ____.
Harbin
It's snowy and ____.
Xi'an
It's sunny and warm.
Guangzhou
It's ____ and ____
函数y=2-x+1x-1中自变量x的取值范围是( )
小华和他爸爸住进一家宾馆,看见一个电热水壶,爸爸拿出一瓶矿泉水说,我这里有1L(1L=10﹣3m3)水,其温度为20℃,你能帮我算出这瓶水的质量以及将其加热到100℃所需要的热量吗?请你帮小华完成任务.水的比热容为4.2×103J/(kg•℃).