A:A
B:B
C:C
D:D
选项
物质
杂质
除杂所用试剂和方法
A
CO2
CO
缓缓通过盛有氧化铜的玻璃管
B
CaO粉末
CaCO3
高温煅烧至质量不再减少
C
NaOH溶液
Ca(OH)2
加入适量的Na2CO3溶液,过滤
D
FeSO4溶液
CuSO4
加入过量Fe粉末,充分反应后过滤
假如你和王翔是同班同学,请根据下表所提供的信息,以My Good Friend为题写一篇60个词左右的短文,向你的朋友介绍一下王翔。所提供的信息尽量用上。
Name
Wang Xiang (a student)
From
Guangdong, China
Age
14
Look
tall, round face, big eyes
Family
father (an office worker),
mother (a nurse)
Favorite food
chicken
dinner
rice, fish and vegetables
⑴May I take your picture?____ A. No, I hurt my arm.
⑵Are you okay?____ B. Yes, he is.
⑶Don't draw or write on the wall.____ C. I'm walking to the hotel.
⑷Is Danny busy?____ D. Sure!
⑸What are you doing?____ E. OK, I'm sorry.
总朝一个方向走, 最后能回到原地的是 ( )