A:which I had said
B:what I had said
C:that I had said
D:I had said
—Do you know girl who is standing under tree?
—Of course! She is Lucy, my classmate.
句子翻译 按所给的汉语,用英语完成下列句子。(本大题共9分,每小题1.5分)
如图,电源电压不变,R1=6Ω,R2=4Ω。