题干
Bonnie looks very smart and is always ________ pink because pink is her favorite color.
A：with
B：on
C：about
D：in
答案(点此获取答案解析）
D
Bonnie looks very smart and is always ________ pink because pink is her favorite color.
A：with
B：on
C：about
D：in
的P点放一电荷量为＋Q2的检验电荷，检验电荷受到的电场力为F，则下列说法正确的是