Who hasn't found themselves reaching for the closest food available when they're tired and stressed? More and more research is proving that this isn't all in our mind. Some foods really do lead to a change in our moods (心情)．
Carbohydrate (碳水化合物) for calm
This is how some people medicate(治疗) themselves with food — by reaching for cookies or pasta(意大利面食) whenever they're upset. Unfortunately, it doesn't always work. You must eat a meal consisting of 100% carbohydrate, on an empty stomach, to obtain the serotonin (血清素) increase so that you have a good mood.
To get the wishedfor effect, you must not eat anything for four hours and then eat at least 30 grams of straight carbohydrate. Dry cereal (谷类食品), a piece of bread with jam, or a potato should do_the_trick.
Protein (蛋白质) for power
Of course, sometimes we don't need to be calm and sleepy.Sometimes we need a great deal of mental concentration, so this is when it's important to mix protein and carbohydrate. The protein will prevent the tryptophan (色氨酸) from flooding your brain，and the rise in serotonin(血清素) won't occur.
Why dessert makes us happy
Fat and sugar cause the brain to let go endorphins (内啡肽), which send pleasure signals throughout the body. This would be fine, except humans are not particularly good at stopping at one cookie or cake.
You can also satisfy your sweet tooth by choosing fruit for dessert.
Timing your meals for energy
Blood sugar drops after four hours of going without food, causing a decrease(减少) in energy. Eating usually fixes this within 20 to 30 minutes, but don't suppose that eating more will cause a faster increase in energy.
When you eat has as much of an effect on your mood as what you eat. If you regularly go for a long period of time between meals, rethink your schedule and plan ahead.
1.The underlined phrase“ do_the_trick” in the third paragraph means ________.
A．be extremely smart
B．intend to cheat someone
C．bring about the desired result
D．do something to amuse people
2.The function of protein is ________.
A．to help you keep calm and sleepy
B．to make you feel energetic
C．to lead you to slowness
D．to increase serotonin in your brain
3.We can infer from the last two parts that ________.
A．fat and sugar can greatly help people feel happy
B．we humans tend to eat lots of cookies and cakes
C．the more we eat, the faster we will gain energy
D．what we eat is more important than when we eat
4.The main idea of the passage is ________.
A．eating for a better mood
B．eating to make you calm
C．eating for more protein
D．eating to make us strong
American researchers have discovered that human brains and sleep patterns are confused by devices(装置) that give out bright lights. Electronics, such as laptops, mislead our minds into thinking that it is still daytime, preventing sleep and increasing the risk of insomnia.
Sleep experts say human's natural body clock begins to rest and relax from the day between 9 and 10 pm but the use of computers confuses it.
A person's brain biologically becomes awake when the sun is out because bright light after dark causes the brain to stop producing the hormone (荷尔蒙) called melatonin that makes us sleepy.
Researchers say blue light from devices such as iPads, which is expected to become a popular reading tool when it comes out later this month, is particularly disruptive (干扰的)during the night when the brain thinks it should be dark.
Experts say a good book is a far better way of resting the brain and ensuring a good night's sleep because the bedside lamp(灯) light doesn't affect the brain as it does not look straight into a person's eyes.
“Potentially, yes, if you're using an iPad or a laptop close to bedtime... that light can be stimulating (刺激) to the brain to make it more awake and delay your ability to sleep，” Phyllis Zee, a professor at Northwestern University and director of the school's Centre for Sleep & Circadian Biology, told CNN.
“And I think more importantly, it could also be enough to affect your circadian (昼夜节律的) rhythm. This is the clock in your brain that determines when you sleep and when you wake up. ”
Alon Avidan, associate director of the Sleep Disorders Center at the University of California Los Angeles, added, “I wish people would just take a boring book — an oldfashioned book — and read by a lamp.”
1.The underlined word “insomnia” in the first paragraph probably means “________”．
A．being unable to eat properly
B．brain injury
C．being unable to fall sleep
D．lack of energy
2.Melatonin is the hormone that ________.
A．makes us sleepy
B．helps us relaxed
C．prevents us from waking up
D．makes us excited
3.The bedside lamp light doesn't affect the brain because ________.
A．it doesn't give out blue light
B．it's not as bright as your laptop
C．it doesn't enter your eyes directly
D．it is adjustable
4.We can conclude from the passage that ________.
A．one who uses his laptop often before bedtime can have his body clock disturbed
B．using a laptop before bedtime is more harmful than using an iPad
C．we'd better not do anything before going to bed
D．the best time to go to bed is before 9 pm
Camping wild is a wonderful way to experience the natural world and, at its best, it makes little environmental influence. But with increasing numbers of people wanting to escape into the wilderness, it is becoming more and more important to camp unobtrusively (不引人注目地) and leave no mark.
Wild camping is not permitted in many places, particularly in crowded lowland Britain. Wherever you are, find out about organizations responsible for managing wild spaces, and contact them to find out their policy on camping and shelter building. For example, it is fine to camp wild in remote parts of Scotland, but in England you must ask the landowner’s permission, except in national parks.
Camping is about having relaxation, sleeping outdoors, experiencing bad weather, and making do without modern conveniences. A busy, fully equipped campsite(野营地) seems to go against this, so seek out smaller, more remote places with easy access to open spaces and perhaps beaches. Better still, find a campsite with no road access：walking in makes a real adventure.
Finding the right spot to camp is the first step to guaranteeing a good night’s sleep. Choose a campsite with privacy(隐秘) and minimum（最小的） influence on others and the environment. Try to use an area where people have obviously camped before rather than creating a new spot.
When camping in woodland, avoid standing dead trees, which may fall on a windy night. Avoid animal runs and caves, and possible homes of biting insects. Make sure you have most protection on the windward(迎风的) side. If you make a fire, do so downwind of your shelter. Always consider what influence you might have on the natural world. Avoid damaging plants. A good campsite found, not made—changing it should be unnecessary.
1.You needn’t ask for permission when camping in________.
A. national parks in England
B. most parts of Scotland
C. crowded lowland Britain
D. most parts of England
2.The author thinks that a good campsite is one________.
A. with easy access B. used previously（以前）
C. with modern conveniences D. far away from beaches
3.The last paragraph mainly deals with________.
A. protecting animals
B. building a campfire
C. camping in woodland
D. finding a campsite with privacy
4.The passage is mainly about________.
A. the protection of campsites
B. the importance of wild camping
C. the human influence on campsites
D. the dos and don’ts of wild camping
My earliest bee experience took place at a summer camp. One day our teacher told us to head up the hill nearby. As little kids do, we all began to race to our .The girls took the concrete stairs the boys ran straight up the grassy hill, at the top of which sat a long wooden fence（围墙）. fear the boys ahead of me vaulted（跳跃）over the fence bravely.
What should I do? Take the stairs and look like a girl, or jump the fence and look ? Then I took my chances with the .
Standing in front of the fence, I placed both hands on the top and .The moment of truth had arrived. If I made it, then I would be as cool as all the other guys. If I didn’t make it…I it. As I jumped, my foot caught on the top of the fence. I went! But I landed on my backside. to laugh off the accident. But then I something moving under me. Just then I saw what seemed like hundreds of bees flying towards me. I had a beehive（蜂窝）! I jumped and as fast as I could. But bees flew faster than I ran. At that moment, all the kids at the camp ran after me, too. What a（an） situation I was in!
When the teacher caught me in the camp parking lot, my were covered with bees. With all the other campers standing around, he all my clothes but my underwear. Bees flew out of my clothes and out of my mouth!
I had gained the of the entire camp, but I did not feel very cool. When all was said and done, I found that I had been given almost 45 bee stings（蜇）all over my body. I learned a most lesson that day. When we are led by the to look cool, we might find ourselves sitting on a beehive. I have stopped trying to be cool since then.
1.A．home B．trip C．destination D．village
2.A．but B．therefore C．because D．as
3.A．With B．Without C．For D．Out of
4.A．brave B．cool C．strong D．lively
5.A．stairs B．girls C．boys D．fence
6.A．hesitated B．watched C．jumped D．trembled
7.A．made B．almost made C．wouldn’t makeD．didn’t make
8.A．Down B．Up C．Through D．Out
9.A．managed B．failed C．continued D．intended
10.A．caught B．felt C．saw D．heard
11.A．pulled down B．broken into C．landed on D．knocked over
12.A．hid B．walked C．crawled(爬行)D．rushed
13.A．exciting B．fearful C．embarrassing D．funny
14.A．clothes B．arms C．legs D．classmates
15.A．put on B．took off C．found out D．took away
16.A．also B．nearly C．even D．hardly
17.A．sympathy B．attention C．strength D．help
18.A．valuable B．humorous C．satisfying D．interesting
19.A．consideration B．way C．curiosity D．desire
20.A．Still B．So C．Yet D．However
— Pity you missed the lecture on nuclear pollution.
— I ______ it, but I was busy preparing for a job interview.
A．attended B．had attended
C．would attend D．would have attended
. His stepmother is kind to him, ______ whom she has a deep love.
A. with B. at C. of D. about
