—Father's Day is coming. Could you tell me ________? —What about a watch? He'll like it.
A:what I should say to my father
B:what gift I should give my father
C:where I should meet my father
D:if I had a party for my father
某物质的溶液中加入氯化钡溶液,产生了不溶于稀硝酸的白色沉淀,下列说法中正确的是( )
完成句子
(1)未来的生活将会很不同。
Life in the future ____ ____ very____.
(2)中国二十年后将会有很多机器人。
China ____ ____ many robots ____twenty ____ ____.
(3)一切将会免费。
Everything ____ ____ free.
(4)在将来我们将不再乘火车或汽车旅行。
We ____ travel by train or car ____ ____ in the future.
(5)机器人将帮助我们做家务。
The robots ____ ____ ____ us ____ the housework.
当人体失血过多,动脉血压突然降低,在这种应急状态下人体出现的反应是( )
起重机将物体由静止举高h时,物体的速度为v,下列各种说法中正确的是(不计空气阻力)( )