题目内容：

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Get a Better Night’s Sleep

You’re trying to get a good night’s sleep, but why do you still find yourself staring at the ceiling? It’s time to listen to what some unexpected experts have to say.

Get the Basic Equipment Right.

There’s really good study on the basic equipment for sleep. 1.  Firstly, most people prefer a mattress （床垫）that is not too hard and not too soft. Secondly, if your mattress is eight to ten years old, you should get a new one. Seventy-two percent of people said they slept better on their new mattress than they did on their old one.

      2. 

Watching TV at night may seem relaxing. However, it beams light into your eyes, which is a “warning” signal for the brain.   3.   Besides, the cooler white and blue light from a computer screen encourages brain activity and makes your brain difficult to calm down. Download the software at stereopsis.com /flux. It gradually makes your screen less bright at sunset, turning its colors a warmer red one.

Keep you Cool.

One of the best signals from the body to go to sleep is a decrease in body temperature. I suggest sleeping in a very cool environment, about 19℃. A hot bath will increase your skin temperature, which finally decreases your main body temperature.  4. 

Make Sleeping Pets Lie.

Sometimes your dogs might need the noise of machines. Many dogs are sensitive to noises outside, like other dogs barking or neighbors coming home late. A noisy machine will drown out the noises that are keeping your pet up, which keep your pet from waking you.  5.   . If you keep them awake during the day, they’re more likely to sleep at night.

A. Read a book before bed instead.

B. Take a bath a half-hour or so before bedtime.

C. You also learn dogs sleep when they’re bored.

D. The dog is very loyal to his master.

E. It proved two theories.

F. You don’t need a really beautiful mattress.

G. Switch off the Box.