---You haven't lost the concert ticket, have you?
--______. I know it is not easy to get another one at the moment, but nowhere can I find it．

下面文章中有5个段落需要添加首句。请从以下选项（A、B、C、D、E和F）选出适合各段落的首句，并在答题纸上将相应选项的标号涂黑。选项中有一项是多余选项。
A. Time can run out.
B. Tomorrow won’t be better.
C. Ideas need time to develop.
D. Your professor will be impatient.
E. You blow off your chances for help.
F. You are probably overestimating （高估）the pain.
Never Put off Tomorrow What You Can Do Today
Want to put off studying for the physics test? Or writing that thirty-five-page research paper on future uses of biotechnology? Sure you do? And who wouldn’t? But it’s still a silly idea to put off doing something until a future time. Here is why ....
【小题1】__________. The task will be still the same. It won’t be any more fun and you still won’t want to do it. As the deadline gets closer and closer, the task seems to become larger and larger if you haven’t started the work. And the stress increases. Now not only do you have to write that paper, you have to do it under great pressure.
【小题2】_________ . Before you start, it seems that the task is unlikely to be accomplished. But you know what? You’re probably miscalculating. Get started -------- maybe on a small piece ------ And you will discover that you have more resources and know more about the subject than you thought. Result? You won’t experience nearly as much suffering as you expected to. Things are guaranteed ------ 100 percent ------- to get better.
【小题3】_____________ . If you leave your work before the night before it’s due, you give up the possibility of getting input from your professor. Professors regularly give advice ----- or at least a few useful tips ---- during office hours. Unfortunately though, they don’t usually hold office hours at midnight, so you will be out of luck when you discover the night before the midterm that you have no idea how to do the questions that will count for two-thirds of your grade.
【小题4】________ . Ever wonder why the professor assigns the papers two weeks before it’s due? It’s because he or she expects you to be thinking about the issue, or doing the research, for two weeks. No, not every waking moment, but at least some of the time. After all, the professor could just as easily have given the assignment one week before it was due if he or she expected less thinking. When you throw together a paper or a report at the last minute, your ideas are half-baked. And your professor will know it.
【小题5】________ . If you put things off at the last minute, you might find that you haven’t budgeted enough minutes to finish the necessary tasks. It’s the easiest thing in the world to miscalculate how long it will take to do all the work especially when new issues arise ------ like illness, family problems, computer breakdowns, trouble at work, and all the other things ------- as you are thinking through your paper argument or preparing yourself for the coming test. If you keep delaying, you don’t allow yourself time for those various life events that have an adverse(不利的) effect on your ability to complete your assignment. 

Find Which Direction Is South

Do you have a good sense of direction? If not, please take with you a compass. But if you forget to take a compass, you can still find your way. 

It’s never a good idea to imagine that the family member who was entrusted（委托）with the job of map-reading actually knows where the family is. You can tell by the slightly confused load on their faces that nothing on the ground seems to match the map. Never mind. The shu is shining and it’s still morning. If you don’t know the exact time, you can still find out where south is, but you’ll need to be patient. 

①Find a straight sick and put it in the ground in a place where you can mark its shadow. 

②Try to position the stick as vertically（垂直）as you can. You can check this by making a simple plumb line （铅锤线）with a piece of string and weight. You haven’t got any string? OK, use a thread from your clothes with a button tied at the end to act as a weight. 

③Mark the end of the shadow cast by the stick. 

④Wait approximately half an hour and mark the end of the shadow again. 

⑤Keep doing this until you have made several marks. 

⑥The mark nearest the stick will represent the shortest shadow, which is cast at midday, when the sun is highest in the sky and pointing to the exact south. 

⑦Pick a point in the distance along the line between the shortest shadow and the stick. 

⑧That point is south of where you are. 

⑨Now you can turn the map, like you did before, and find which way you should be travelling.

6To find the direction, we ought to be patient probably because

A. it is not easy to find a proper stick     

B. it is not easy to position the stick

C. it takes hours to make the marks       

D. it takes about half an hour to make the marks

The passage would probably be most helpful to      . 

A. those who draw maps            B. those who get lost

C. those who make compasses       D. those who do experiments

Which of the following pictures best shows the way of finding the direction of south?

The author presents this passage by      . 

A. telling an interesting story         B. describing an activity in a lively way

C. testing an idea by reasoning        D. introducing a practical method

 —Tom, it seems that you haven’t cleaned your bedroom the whole week .

—You didn’t come in around 10 yesterday morning; I ________ it .

----- I’m sorry, but we really can’t offer you the job if you haven’t get a higher education.

----- What a pity!  I___________ hard at high school.

   A. must have worked   B. should have worked   C. may have worked   D. should work