琼脂免疫电泳常用于（） A.RNA的分离和纯化 B.糖的分离 C.DNA的分离和纯化

Maybe you've lost your job.Maybe you didn't get the ____ in your job.Maybe your sweetheart ____ with you.People say “Don't take it personally”and “Don't let it get to you”，but that's very ____ to do.
If you're feeling disheartened，___ are some strategies (策略) for making yourself feel better？It's pretty clear that ____“I'm the greatest！”or winning a prize along with every other second­grade soccer player isn't a good way to ____  healthy self­respect.
Then what can you do to feel better？Here are some ____ to follow：
Do a good deed.This is as selfish as it is selfless；you'll ____ as much as the person you're helping.I had a friend who ____ a period of vast rejection：she was fired from her ____，she didn't get into the graduate program to which she'd ____，and her boyfriend split up with her.Everything worked out fine ____，and I asked her how she got through such a(n) ____ time.She said，“I was ___ addicted to doing good deeds for other people.It was the only way I could make myself feel like I wasn't a total loser.”
Keep a resolution (决心)．Not only will you benefit from exercising or ____ out your garage，but you'll also get a boost (激励)from the mere fact that you made a ____ and stuck to it.
Boost your ____.Studies show that when you're feeling energetic，you're much more likely to feel good about yourself.Most important：get enough sleep.
Challenge yourself ____.This strategy doesn't work for me，but I know that many people feel great ___ white­water rafting，bungee jumping，or roller­coaster­riding.For the less daring，a great run，or bike ride can do the ____.

小题1:	A．promotion B．gift C．match D．break

小题2:	A．kept up B．put up C．broke up D．made up

小题3:	A．easy B．hard C．dangerous D．pleasant

小题4:	A．which B．how C．where D．what

小题5:	A．hearing B．praising C．knowing D．repeating

小题6:	A．have B．lose C．build D．hurt

小题7:	A．ideas B．tips C．plans D．methods

小题8:	A．benefit B．repay C．reject D．demand

小题9:	A．went through B．came across C．looked for D．waited for

小题10:

A．house B．incident C．job D．boss

小题11:

A．appealed B．listened C．reacted D．applied

小题12:

A．in the beginning B．in the end C．in a moment D．in a sense

小题13:

A．wonderful B．tough C．unforgettable D．busy

小题14:

A．practically B．hardly C．carefully D．unwillingly

小题15:

A．working B．leaving C．finding D．cleaning

小题16:

A．bet B．difference C．promise D．record

小题17:

A．energy B．confidence C．courage D．ability

小题18:

A．mentally B．physically C．successfully D．naturally

小题19:

A．before B．upon C．until D．after

小题20:

A．service B．business C．trick D．favor