My favourite teacher is our English teacher. She is a very beautiful woman. She is thirty-six years old. She has a round face, black hair, big eyes, a small nose and a small mouth. She is very kind to us. She often plays games with us. S
如图所示的电路中,R为定值电阻,电源电压恒定不变.将一个标有“6V2W”字样的小灯泡接在a、b两点间,小灯泡恰能正常发光;若更换一个“6V3W”字样的小灯泡接在a、b两点间,则这个小灯泡( )
在 横线 里填上“>”“<”或“=”.
0.49____ 0.499
4.12____ 4.23
12.00____ 12
3.0____ 2.999
2.620____ 2.62
0.98____ 1
0.82千克____ 820克
7米23厘米____ 7.2厘米
9.27吨____ 9吨27千克
1.004千米____ 1千米40米.
请给加下划线字注音。
晒____笑 牟____取 颤____颤巍巍 任____劳任怨
世界上人口自然增长率最高的大洲是( )