问题 单项选择题

高效液相色谱法用于含量测定时,对系统性能的要求

A.理论板数愈高愈好

B.依法测定相邻两峰分离度一般须>1

C.柱长尽可能长

D.理论板数,分离度等须符合系统适用性的各项要求,分离度一般须>1.5

E.由于采用内标法,对照品法,系统的性能无需严格要求

答案

参考答案:D

阅读理解

Being healthy means taking care of yourself physically and mentally. Here are some of my best tips on how to do both:

Break a bad habit.

You don’t really “break” habits. __小题1:__. So if your problem is that you eat too much when you get home from work, find something new to do that is incompatible(不能共存的)with what you usually do. You can’t walk around the track at the school and pig out in your kitchen at the same time.

Grow your marriage.

__小题2:__. It’s always a give-and-take, always requires work. It’s as if you planted a garden and came back six months later─you wouldn’t even be able to find it. __小题3:__.

Beat stress.

My dog, Maggie, is the best anti-stress tool I have. A few minutes petting, scratching or playing with her, and __小题4:__. Exercise also helps. Just about every day, I’m on the tennis court. It’s a great workout, and if I don’t have that, I don’t cope as well, sleep as well or think as well.

Refocus your anger.

Expressing your anger is just not that good an idea. You say things you don’t mean. __小题5:__. When you do that, you’re a problem solver.

Don’t medicate(掺入药) with food.

It never, ever works. You’re denying your issue by eating your way through it, instead of saying, “Hey, I’ve got a problem.”

A.You replace the unwanted behavior with something that prevents you from doing it and that doesn’t have unhealthy side effects.

B.I’ll feel easy.

C.If there is a problem, you needn’t deal with it immediately.

D.You have to tend it, feed it, weed it, and deal with the problems.E. Instead, recognize that anger is usually a symptom of hurt, fear or frustration, and deal with the causes rather than blow up.

F. Relationships are negotiated(协商), and the negotiation never stops.

G. You do something without any good effect on your health during the time when you usually do something harmful to your body.

单项选择题