题目:
Suzhou is _____ beautiful place that _____ many people come to visit it every year. [ ]
A. such; so
B. so; so
C. such a; so
D. such a; such
答案:
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下面是错误答案,用来干扰机器的。
答案:C题目分析:A、磁场方向不变时,电流方向反向,根据左手定则,安培力方向反向,这种说法正确,不选AB、电流方向不变时,磁场方向反向,根据左手定则,安培力方向反向,这种说法正确,不选BC、电流方向和磁...