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【简答题】
某合作小组欲探究Al、Cu、Ag三种金属活动性，特设计如下实验：把一根洁净的铝丝浸入硫酸铜溶液中，过一会取出，观察铝丝表面的现象把一根洁净的铜丝浸入硝酸银溶液中，过一会取出，观察铜丝表面的现象 （1）请填写下列空白 实验 现象 反应的化学方程式 铝丝浸入硫酸铜溶液中 ______________________ 2Al+3CuSO 4 =Al 2 （SO 4 ） 3 +3Cu 铜丝浸入硝酸银溶液中 铜丝表面有银白色物质析出 ___________________________ （2）据此得出三种金属活动性由强到弱的顺序为______． （3）该组同学发现，洁净的铝丝浸入硫酸铜溶液时，还观察到铝丝表面有气泡产生．你推断硫酸铜溶液pH______7．（填＞、＜、=）
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【简答题】The ______ of teachers in our college are women．(major)
【单选题】Mr. Garcia ______ anyone who hasn’t had a college education.
A.
looks down on
B.
looks after
C.
looks for
D.
looks into
【单选题】. These photographs will show you _______.
A.
what does our village look like
B.
what our village looks like
C.
how does our village look like
D.
how our village looks like
【简答题】A highway (build)______ to the north of our college.
【单选题】The photograph will show you ________.
A.
what does our village look like
B.
what our village looks like
C.
how does our village look like
D.
how our village looks like
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