下列物质中属于纯净物的是( )
A:空气
B:碘酒
C:天然气
D:干冰
——How do you fee1 about the new film?—— I don't like the end.
实验中,电流表(0.6A量程)、电压表(3V量程)的某组示数如图所示,图示中I=____A,U=____V.
简答:糖尿病是“富贵病”,请你设计实验检验病人尿液中的葡萄糖,并与正常人作对比,设计要求:
(1)写出实验所用化学药品
(2)写出实验现象并作出结论.
下列关于植物类群的叙述,正确的是( )
STUDY ENGLISH IN AMERICA
Country
Tina comes from ____.
Weekend Activity
Tina visits____ on Sundays.
Location
Tina's host family is in a ____ area.
TV Program
Tina always watches____ in the evening.
Study Time
Stay for ____ and study English as Tina does!