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【单选题】
Even when stranded in an isolated village by snow,_____.A.
it seemed my journey was still exciting
B.
my journey still seemed exciting
C.
I still thought my journey exciting
D.
my journey was still thought to be exciting
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举一反三
【简答题】Watt
【单选题】下列四个实验中，只需三个就可以证明Zn，Cu、Ag三种金属的活动性顺序，其中不必要进行的实验是（ ）
A.
将锌片放入稀硫酸中
B.
将铜片放人稀硫酸中
C.
将锌片放入硝酸银溶液中
D.
将铜片放人硝酸银溶液中
【简答题】如果AP发射功率为500mw，哪么对应的dbm值是（）.
【单选题】Watt wanted to find a way to ____.
A.
measure the work his engine could do
B.
tell people how powerful his engine was
C.
lift a 3300-pound weight
D.
both A and B
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