看图写字。
____ ____
⑴How can you get to the school ?____
⑵Happy birthday !____
⑶What's the weather like in summer ?____
⑷May I speak to Mike ?____
⑸Where is your aunt from ?____
A、It's cold .
B、Shenzhen .
C、Thank you .
D、Take bus No.4 .
E、Yes , speaking .
实验编号
1
2
3
稀硫酸的质量分数
10%
20%
溶液温度/℃
反应前
20
30
反应后
26
37
28
反应所需时间
长
较短