根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。(注意：涂在答题卡上，E涂 AB F 涂 AC G涂 AD)
Our mood may change suddenly like a storm with lightning and thunderbolts that comes without notice.
The good news is that bad moods can leave as suddenly as they have come. Exceptions to this rule of course are cases where there are other problems such as depression or any other mental destruction.
How to improve your mood?
______1_________When you understand that you are not feeling happy but you are in depression or disappointment, then you can use these simple techniques that will be able to change the negative situation and improve your mood.
______2_______. Exercises, gymnastics and sports help a lot to achieve a better emotional balance.
If you feel that you are in a bad mood, take a hot bath or sauna. _________3__________.
Watch a movie, read a book or talk to a friend.
________4__________. When you leave work or home, go to places that make you happy and calm. This helps to improve your mood.
Make relations with happy, optimistic and pleasant people. ______5_______. Positive and optimistic feelings that create positive thinking for the future will help you overcome your bad feelings and defeat your bad mood.
When the problem of bad moods, frustration and negative emotions beyond normal situations becomes chronic (长期的), it is important to turn to a specialist for help.
A．The relaxation of the muscles will help.
B．Change your environment.
C．Use physical activity to fight against feelings of depression.
D．This can help you improve your mood significantly.E. First you have to learn to recognize when you are in a bad mood.
F. There are ways to improve your mood.
G. Changes in feelings and mood can happen for various reasons.
的滑片向b端移动时，则（ ）
的滑片向b端移动时，的阻值越来越小，故并联电路的总电阻减小，根据串联电路的分压规律可得：R3的电压减小，消耗的功率减小，故A错误；电容器电压等于R3的，故也减小，所以质点P将向下运动，所以D错误；外电路总电阻减小，所以干路电流增大，而R3的电流减小，根据I1=I3+IA，可得电流表读数IA增大，所以B错误；因R1的阻值和电源内阻r相等，故外电路电阻大于电源内阻，且逐渐减小，如图所示，由输出功率与外电阻的关系可得：电源的输出功率在增大，所以C正确；