认知行为团体治疗的目标之一是（） A.帮助成员获得具有治疗作用的自我觉察能力 B.鼓

已知集合A={y|y=x²+1，x∈R}，B={x|y=x²-1，x∈R }，则A∩B=______．

同一地点有甲、乙两个单摆，当甲摆动了80次时，乙恰好摆动了120次，则甲、乙两摆的摆长之比是（     ）

A．2∶3

B．9∶4

C．4∶9

D．3∶2

阅读理解。

     One of the worst feelings in the world is trying your hardest at something but still falling short. In the

case of schoolwork, studying for hours and bringing home disappointing grades may make you feel hopeless

or helpless, but this is far from the truth. If you are dealing with disappointing grades, promise to change

your study habits and you'll be amazed by the results.

Act Fast

     The most important rule about dealing with disappointing grades is to act fast. Don't sit around and let

them get worse, and definitely don't ignore them. Instead, admit that you need help and go in search of it

soon. The faster you face up to the problem, the faster you can find a solution and see some results.

Tweak your routine

     If you are studying hard and still dealing with disappointing grades, it's probably time to tweak your

routine a little. Remember, if you keep doing the same thing all the time you'll undoubtedly keep getting the

same results. Mix things up by asking for help, whether from a friend or fellow student, your teacher or a

private tutor. Ask for help with the subject matter and tips for studying on your own.

Study Successfully

     Of course it doesn't matter where you study or who you study with if you are studying the wrong things.

Make sure that you are studying successfully by:

     *Reviewing your textbooks.

     *Looking over your notes from class.

     *Taking new notes while you study.

     *Investing in study guides. 

     *Answering all of the review questions you can find.

     *Talking through events or concepts that are integral (整体) to your lessons.

Learn From Your Mistakes

     If, after all of your changes and redoubling your study efforts, you are still disappointed with your grades,

then it is time to figure out exactly where you are going wrong. Look over exam papers and assignments to

see if you are having trouble with a particular kind of question (multiple choice, true or false, etc.) or concept.

Examine your essays to see if you are explaining your ideas clearly and completely, or if it is the mechanics

of your writing (spelling, grammar, etc.) that is letting you down. Request an appointment with your teacher

and use this time to discuss your work and get his/her feedback as well.

     Dealing with disappointing grades is something that every student will face at one time or another. It won't

be fun, but take a realistic look at your attention in class, your study habits and your performance on past

assignments and exam. Figure out where you are having trouble and dedicate yourself to fixing these problems.

1. The purpose of this passage is _____. [ ]

A. to introduce practical ways to solve worrying school problems

B. to persuade students to change their attitude toward schoolwork

C. to offer advice on how to improve academic grades at school

D. to emphasize the importance of dealing with disappointing grades

2. The underlined phrase to tweak your routine means _____. [ ]

A. to stick to the same study plan and seek help when possible

B. to mix things up before you work out a practical solution alone

C. to examine your everyday life to make room for self improvement

D. to make necessary alterations in your study habits and plans

3. According to the passage, it is desirable to _____. [ ]

A. adopt a great variety of successful study methods and work on your own

B. have a study partner who act fast to face up a problem and study successfully

C. find out your weak points by reviewing schoolwork and seek necessary help

D. make an appointment with your teachers and develop useful examination skills

4. The author of this passage is probably a(an) _____. [ ]

A. psychologist

B. examiner

C. parent

D. instructor

5. The author thinks that dealing with disappointing grades calls for _____. [ ]

A. a strong will power

B. a down-to-earth attitude

C. creativity and dedication

D. undivided attention

铸坯形状缺陷有哪些？

T1加权像呈略低信号，质子加权像和T2加权像呈明显高信号的现象，称为（）

A.牛眼征

B.晕环征

C.灯泡征

D.不定型征

E.靶征