第二节（共5小题；每小题2.5分，满分12.5分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。
The key to becoming an effective student is learning how to study more wisely, not harder. 16
G
The following are the top four study habits used by highly successful students.
Don't attempt to cram (塞满) all your studying into one study period.
Do you frequently stay up late to complete your assignments or prepare for tomorrow's exams? 17
B
Successful students rarely try to complete all of their studying in just one or two study periods. You need to learn to have regular, yet shorter, study periods.
18
A
It's important you create a daily study routine. When you study at the same time each day and each week, your studying will become a regular part of your life. If you have to change your schedule from time to time due to unexpected events, that's okay. However, you'd better get back on your routine as soon as the event has passed.
Each study period should have a specific goal.
19
E
You need to know exactly what you need to achieve during each study period. Before you start studying, set a study period goal that supports your overall academic goal.
Never delay your planned study period.
It's very easy and common to put off your study period for lack of interest in the subject, or just because the task is hard. 20
D
If you do, your studying will become much less effective and you may not get everything completed.
We're confident that if you develop the habits above you'll see a big improvement in your study.
A. Study at the same time.
B. If so, it's time for a change.
C. Effective students usually study wisely.
D. But successful students do not put off studying.
E. Simply studying without direction is not effective.
F. It would lead to a great number of mistakes you should have avoided.
G. Most successful students achieve success by developing effective study habits.
16. ______ 17. ______ 18. ______ 19. ______ 20. ______
