高中英语外研版（2019）必修第二册Unit 1 Food for thought Developing Ideas课时专练

of the machines were carried away being examined.

If you are to see me, I won't mind it.

His answers mine. I suspect that he copied my answers.

All we have done will affect the environment .

he can pass the exam.

A warm drink of milk before bed has long been the best choice for those wanting a good night's sleep. But now a study has found it really does help people nod off(打瞌睡)—if it is milked from a cow at night.

Researchers have discovered that "night milk" contains more melatonin(褪黑激素), which has been proven to help people feel sleepy and reduce anxiety(焦虑). The study, by researchers from Seoul, South Korea, involved mice being fed with dried milk powder(奶粉) made from cows milked both during the day and at night. Those given night milk, which contained 10 times the amount of melatonin, were less active and less anxious than those fed with the milk collected during daytime, according to the study published in The Journal of Medicinal Food.

Night milk quickened the start of sleep and caused the mice to sleep longer. While the effect of cow milk harvested at different time has not been tested on humans up to now, taking melatonin drugs has been suggested to those who have trouble falling asleep at night.

Previous studies have also showed that milk can be excellent for helping sleep because of the calcium content, which helps people to relax.

If you want to keep fit, please refer to the following:

Move More

Make it a daily to find ways to move your body. Climb stairs instead of taking the elevator. Walk your dog; play with your kids. It doesn't have to be an hour in the gym or a 45-minute dance class. But that's great when you're up to it. At the same time, move more.

Quit Smoking

Ever since 1960 when it was announced that smoking was harmful to health, Americans have been reducing their use of tobacco products. Just recently, we've seen more and more teens smoking. Could it be the Hollywood influence? Take care! Warn your children against smoking.

While recent studies show a glass of wine or one drink a day can help protect against heart disease, more than that can cause other health problems such as liver and kidney(肝肾) disease and cancer.

Reduce Stress

Easier said than done, stress comes in many ways. Spend 30 minutes a day doing something you like such as walk on the beach or in a park, read a good book, visit a friend, listen to relaxed music and watch a funny movie.

Protect Yourself from Pollution

If you can't live in a smog—free environment, at least avoid smoke-filled rooms. Exercise indoors in air conditioning when air quality is good.