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【单选题】
I wanted to go swimming, but the rain _______ heavy, I decided to give up the idea.A.
is
B.
was
C.
being
D.
has been
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【简答题】高压网络短路电流计算中基准电压与系统标称电压之比约为（）倍。
【简答题】简述幼儿教育的意义。
【简答题】下图中1所示的设备是( ),其作用是利用( )加热( ),以预防( )。
【判断题】According to this research, the brains of people who, in their mid-40s, walked slowly are smaller.
A.
正确
B.
错误
【单选题】The brains of people who exercise may be better equipped to_______ mental challenges.
A.
meet with
B.
cope
C.
remove
D.
tackle
【简答题】试述幼儿教育的意义。