完形填空。 Do you know how to study better and make your study more effective (有效的)? We all know that Chinese students usually study hard for long hours.This is very good, but it doesn't __ 1 __ a lot. If you want to study effectively, you must have enough sleep,enough food,enough rest and __ 2 __. Every day you need to go out for a walk or visit some friends or some nice places.It's good for y our __ 3 __.When you return to your studies,your mind will be refreshed (清醒) and you'll __ 4 __ more and study better. Here  takes English learning as an example. First you make a lot of progress (进步) and you feel __ 5 __. Then  your languages study seems to stay the same and you may __ 6 __ it. This can last for days or even weeks, __ 7 __ you needn't lose hope. At some point your language study will __ 8 __ take another big jump. You'll see that you really have been learning all the time. If you get enough sleep, food, rest and exercise, studying English can be very effective and __ 9 __. Don't drop it along the way. Learn slowly and you're sure to get __ 10 __ result. (     ) l. A.spend (     ) 2. A.homework (     ) 3. A.study (     ) 4. A.hear (     ) 5. A.surprised (     ) 6. A.forget (     ) 7. A.and (     ) 8. A.again (     ) 9. A. useful (     ) 10. A.a bad B. keep B. exercise  B. health B. ask B. worried  B. miss B. yet B. not B. helpful   B. a good   C. help C. housework C. sleep C. think C. happy C. leave C. or C. never C. interesting C. an unhappy D. l ook D. time D. life D. learn D. strange D. drop D. till D. always D. important D. an