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Do you have troulbe sleeping at night? Then maybe this is for you. When you worry about getting to sleep and keep tossing and turning around, trying to find a comfortale position, you're probably only making matters worse. What happens when you do that is that your heart rate actually increases, making it more difficult to relax.
You may also have some bad habits that contribute to the problem. Do you often rest during the day? Do you get very little exercise, or do you exercise a lot late in the day? Have you got enough sleep, or do you sleep late on weekends? Any or all of these might be leading to your sleeplessness. What should you do, then, on those sleepless nights? Don't bother with sleeping pills. They can actually make it worse later. The best thing to do is to drink milk or eat cheese. These are all rich in a kind of acid and help produce a chemical in the brain that controls sleep. That matter will help you relax, and you'll be on your way to getting a good night's sleep.

答案解析：
(1) 正確答案為B。根據Do you have troulbe sleeping at night? Then maybe this is for you. 你有失眠問題嗎？那這篇文章會對你有用。可知，這篇文章提供了一些解決失眠問題的方法，因此B項正確。
(2) 正確答案為A。根據do you exercise a lot late in the day? 你晚上會做大量運動嗎？以及后面說這會導致失眠?？芍砩献龃罅窟\動會導致失眠，因此B項正確。
(3) 正確答案為C。根據Don't bother with sleeping pills. They can actually make it worse later.不要吃安眠藥，那會使問題更糟糕。可知，安眠藥對失眠無用，因此C項正確。