The sewage pipes were _____ up with rubbish.

A. choked　　 　　 B. choking　　　　 C. to choke 　　 D. blocked

Why don’t you put the meat in the fridge? It will _____ fresh for several days.

 A.be stayed               B. stay                  C. be staying               D. have stayed

We cannot figure out ______ quite a number of insects, birds, and animals are dying out. [北京2004]

A. that　 　 B. as　 C. why　 D. when

I don't think he meant to hurt you yesterday. I would rather he ________.

A. didn't say that 　　　　　　B. don't say that

C. doesn't say that 　　　　　 D. hadn't said that

Do you find getting up in the morning so difficult that it’s painful？This might be called laziness，but Dr. Kleitman has a new explanation. He has proved that everyone has a daily energy cycle.

During the hours when you labor through your work you may say that you are“hot”. That’s true. The time of day when you feel most energetic（精力充沛的）is when your cycle of body temperature is at this peak（高峰）. For some people the peak comes during the morning. For others it comes in the afternoon or evening. No one has discovered why this is so，but it leads to such familiar words as：“Get up，John！You’ll be late for work again！”The possible explanation to the trouble is he is at his temperature-and-energy peak in the evening. Much family quarrelling ends when husbands and wives realize what these energy cycles mean，and which cycle each member of the family has.

You can’t change your energy cycle，but you can learn to make your life fit it better. Habit can help，Dr. Kleitaman believes. Maybe you’re sleepy in the evening but feel you must stay up late anyway. Counteract（对抗）your cycle to some extent by habitually（习惯性地）staying up later than you want to. If your energy is low in the morning but you have an important job to do early in the day，rise before your usual hour. This won’t change your cycle，but you’ll get up steam and work better at your low point.

Get off to a slow start，which saves your energy. Get up with a leisurely yawn（呵欠）and stretch. Sit on the edge of the bed a minute before putting your feet on the floor. Avoid the troublesome search for clean clothes by laying them out the night before. Whenever possible，do routine work in the afternoon and save tasks requiring more energy for your sharper hours.

1．According to the passage，family quarrels may result from _____________.

A．unawareness of different energy cycles

B．the same energy cycle of family members

C．failing to get up early in the morning

D．knowledge of energy cycles

2．If you are used to getting up late in the morning，you are likely to be most energetic __________.

A．in the morning 　 B．at noon　 C． in the evening　 D．in the afternoon

3．What’s the likely relationship between energy cycle and body temperature？

A．Energy cycle and body temperature are the same things.

B．The higher your temperature is，the less energetic you are.

C．There is no direct relation between them.

D．The higher your temperature is，the more energetic you are

4．Which of the following statements is not true？

A．One can change his energy cycle once he makes up his mind.

B．We still don’t know why people have different energy cycles.

C．Habits will help to make our life fit energy cycles better.

D．If you rise earlier than usual，you will be more efficient at your low point in the morning.

On the closet _____ a pair of trousers his parents bought for his birthday.

    A. lying           B. lies               C. lie             　　　　 D. is laid

Nearly all educators believe that a challenging situation can often ____ the best qualities of a person.

　 A. bring up　　　 　　 B. bring about　　　　　 C. bring forward　　　 D. bring out

Russ and Earl were auto mechanics______ the same pay,but Earl had more ambition．

　　A．to earn B．to have earned C．earning D．earned

—I haven’t got the reference book yet, but I’ll have a test on the subject next month.（ ）

—Don’t worry. You ______ have it by Friday.

A. could　　 B. shall　 C. must　 D. may

We apologize for any inconvenience you _______ have been caused by the delay of the flight.

A. may　　 　　 B. would　　　 　　 C. must　 　　　　　 D. need