下列说法中错误的是( )
A:测量时,刻度尺不能歪斜
B:读数时,视线应垂直于尺面
C:误差是由于测量时未遵守操作规则而引起的
D:某人的拇指长度约为50mm。
补全表格中所缺信息。
Cathy's problem
◎She feels sad because she has____every day.
ZhangMei's advice
◎Talk to others,such as parents,____or friends.
◎Listen to music because music can make people feel____.
◎____.It's a good way to forget about homework.
◎Try to____classmates.
I think people here are friendly. Do you agree __________ me?
下列说法正确的是( )