A：Come on，baby! Dinner is ready

B：Oh，yeah，Mom! I'm coming____

A：He's still working overtime at his office.Let's eat first.

B：Oh，Mom!____

A：They're good for your health.____

B：OK! Although they taste bad，I'll try to have them.

A：____ I hope you can be in good health.

B：Sorry，Mom! I won't.____

A：OK，but you have to be back by ten.

B：I will，Mom!

A.You eat too much unhealthy food.

B.You're not a baby any more!

C.You like eating unhealthy food.

D.Where's my dad?

E.What did you do?

F.Why did you make broccoli and eggs again?

G.By the way，can I go to a movie with my friends tonight?

下列标语运用最得体的一项是（ ）。

如图所示，电动势为E，内阻为r的电池与定值电阻R₀、滑动变阻器R串联，已知R₀=r，滑动变阻器的最大阻值是2r．当滑动变阻器的滑片P由a端向b端滑动时，下列说法中正确的是（  ）