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【简答题】
某同学在学习碱的知识时，设计了以下实验报告（部分），请将该报告填写完整． （一）实验报告： 实验步骤 实验现象 实验结论及化学方程式 1、分别NaOH溶液和Ca（OH） 2 溶液的试管里，加入无色酚酞试液，振荡． ______ ______能与酸碱指示剂作用． 2、CuCl 2 溶液的试管里分别滴加NaOH溶液和Ca（OH） 2 溶液，振荡． ______ 有关反应原理： ______； ______． （二）实验反思：从物质组成的角度解释碱具有一些相似性质的原因______．
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【简答题】They didn't dare to leave the train lest they be attacked by wolves.
【单选题】________ against the coming hurricane, they didn't dare leave home.
A.
Warned
B.
Having warned
C.
To warn
【单选题】_____ against the coming hurricane, they didn't dare leave home.
A.
Warned
B.
Hacing warned
C.
To warn
D.
Warn
【单选题】They didn't dare to go back into the high-rise_______the earthquake would come again any minute.
A.
on the grounds that
B.
by the reason that
C.
for fear that
D.
in as much as
【单选题】____ against the coming hurricane, they didn't dare leave home.
A.
Warned
B.
Having warned
C.
To warn
D.
Warn
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