题目内容：

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。

If something that you're doing doesn't challenge (向…挑战) you, then it doesn't change you. We all need some normal stress in our lives, after all.   1. So challenge the following limits:

1. Figure out what you're scared of and do it continuously．

If you're a salesman, and you're scared of talking to people personally or over the phone, now, instead of being scared and thinking you’ll fail, spend at least five minutes a day to pick up the phone and make a call.  2. But don't stop on the first try! Eventually, you can look at fear in the eyes and say, "Go on, I'm not scared!"

2. Take a class for a hobby you've been wanting to develop.

Make sure this hobby is not linked to your career; you have to relax and relieve your stress while doing this. Some examples might be cooking, sewing, painting and so on. You will challenge yourself by learning something new. 3.  

3.   4.

You don't need to go to the gym. A simple 9-minute run around your neighborhood can do wonders for yourself.

Exercise can not only help you maintain your regular weight, but also make you feel better about yourself．

4．Travel and allow yourself to be interested in new people．

5.  try to connect with the service staff. You never know what kind of people they're going to be. Get out of your house or go online right now to book your class. Start to travel now and learn to challenge yourself.

A．You should make a plan before you travel.

B．Set aside at least a few minutes a day for physical exercise.

C．Running may be a better choice.

D．Don't just limit yourself to your fellow travelers.

E．Taking a class for what you like may give you extra income as well.

F．You may upset people a little bit sometimes.

G．You can never see any improvement if you stick to your comfort zone.