先通读下面的短文，掌握其大意，然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案。
    Carole worried a lot about her weight(体重).She was a little too large,and she  1 that's all because she ate too much junk food.When Carole felt2 ， she loved to eat junk food to make herself feel better.Chocolates and cookies were her favorites.But when her stomach felt very full, she3wanted to eat.It was clear that she had no control over both food and bad feelings.Carole's parents were quite worried about Carole.They took4to see a doctor.The doctor didn' t think Carole was sick.He just told her some5 of developing better self-control(自制力).
    According to the doctor ,using6 for comfort (慰藉) is not always a bad thing.7if the first thing one wants to do is open his fridge(冰箱)whenever he is upset，it can be a problem.He asked Carole to try hard to8the habit of eating for comfort.He advised her to do9else to have fun，like talking to someone on the phone or going out with Mends when she felt unhappy.
    Carole felt the doctor's advice was really10.When she left.she was sure she would soon make a change!

曲线图能更直观地反映某些科学规律．

如图，纸面内有E、F、G三点，∠GEF=30°，∠EFG=135°．空间有一匀强磁场，磁感应强度大小为B，方向垂直于纸面向外．先使带有电荷量为q（q＞0）的点电荷a在纸面内垂直于EF从F点射出，其轨迹经过G点；再使带有同样电荷量的点电荷b在纸面内与EF成一定角度从E点射出，其轨迹也经过G点．两点电荷从射出到经过G点所用的时间相同，且经过G点时的速度方向也相同．已知点电荷a的质量为m，轨道半径为R，不计重力．求：

She _______ happy.

如图是几种实验室制取气体的发生装置和收集装置，请回答下列问题：