问题
选择题
As to the unemployment, the government has taken a series of measures in many areas, _______ I am sure, will benefit the people out of work.
A.which
B.that
C.what
D.where
答案
答案:A
As to the unemployment, the government has taken a series of measures in many areas, _______ I am sure, will benefit the people out of work.
A.which
B.that
C.what
D.where
答案:A
(8分)实验室中有一瓶标签受损的无色液体,如图所示。
这瓶无色液体是什么呢? 实验员老师告诉大家,该液体只能是硫酸钠溶液、
氯化钠溶液和蒸馏水中的一种。
(1)大家讨论后一致认为不可能是蒸馏水,理由是 。
(2)为确定该液体成分,同学们继续进行了如下实验探究,请完成实验报告:
实验操作 | 实验现象 | 实验结论 |
没有沉淀产生。 | 该液体不是硫酸钠溶液。 | |
该液体是氯化钠溶液。 |