题目

补全短文。根据短文内容，从下面方框中选择适当的选项补全短文，注意选项中有一个多余选项。 A. She always stands in the wind waiting for you back from school B. When you are growing up day by day C. Mother is always ready to give everything she has to her children D. Mother always helps us with our lessons at home E. In your walking hours, she always holds you in her arms Only mother’s love is true love. It gives everybody everything in all his life. When you are still a baby, mother takes good care of you as much as possible.    1   . When yo如图所示，R1=10Ω，R2=3.2Ω，滑动变阻器的总电阻R=6Ω，当滑动触头由a端滑向b端的过程中[　　 ] A、安培表示数一直减小，伏特表示数一直增大 ； B、安培表示数一直增大，伏特表示数一直减小； C、安培表示数先增后减，伏特表示数先减后增； D、安培表示数先减后增，伏特表示数先增后减。