问题
选择题
Can I take Lisa to the aquarium tomorrow? If she ________ there, she _______ a good time. [ ]
A. goes; has
B. will go; has
C. will go; will have
D. goes; will have
答案
答案：D
搜题请搜索小程序“爱下问搜题”
Can I take Lisa to the aquarium tomorrow? If she ________ there, she _______ a good time. [ ]
A. goes; has
B. will go; has
C. will go; will have
D. goes; will have
答案：D
小佳在实验室发现一种黑色粉末和一瓶标签破损的无色溶液（如图所示）．她取少量黑色粉末与溶液混合，发现立即产生了大量无色的气泡．
（1）对这两种物质是什么，她进行大胆猜想．小佳的猜想可能是：
①______和______；
②______和______．
（2）请你帮助小佳同学完成实验，以证明猜想①是正确的．
| 实验步骤 | 实验记录 | 实验结论 |
| ①取少量黑色粉末于试管中，滴加少量无色溶液 ②______ | ①有气泡产生 ②______ | 产生的气体是______， 原猜想①成立． |
