Everybody believes he will be the winner of the 100-meter ____.

A．competition

B．match

C．contest

D．race

Although Rose is very busy, she still ____ a lot of time to her students in her spare time.

A．spends

B．provides

C．devotes

D．offers

Will you help me out with this mathematical problem? I ____ it.

A．am going for

B．am stuck with

C．am blamed for

D．am caring for

The reason why science exists is to improve our lives. Sometimes science can ruin our small guilty pleasures we nature to be happier, though. These four little truths are just some of those.
Sleeping with pets is a good way to catch the plague(瘟疫), or some other bacterial infections, as is claimed in the study done in February 2011 in Emerging Infectious Diseases magazine. The study shares a case of a nine-year-old boy whose cat caught the plague and gave it to its owners while they were sharing a bed. A regular visit to the vet can greatly reduce the risk of your pet catching any disease that may infect the owner as well.
A recent study done on 200,000 people has shown that vitamin supplements do nothing to improve our lives, and what is worse—they actively increase our death risk. This conclusion from 2010 was so unbelievable that it made researchers do even more studies. Each study had the same result. People who choose vitamin supplements over fruit and vegetables are the same as people who choose to eat a burger over a healthy salad.
People who use the solarium(日光浴室)experience certain changes to their brains that are very similar to many caused by drug addiction. According to a study, our brain can in fact recognize the difference between the natural UV light and the solarium.
Long exposure to artificial light during the night is directly linked to a higher risk of breast cancer, obesity and depression. Exposure to artificial light before sleeping disturbs the natural biorhythms(生物节奏)of our bodies, which leads to restriction on the hormone(荷尔蒙)melatonin, which is the hormone that helps us fall asleep.

Title: Four scientific小题1:_______
Passage outline	Supporting details
Sharing bed with your pet is a terrible idea	*You will probably be infected with小题2:______. *To reduce such risk, you should take your pet to visit the vet小题3:______.
Be小题4:______about vitamin supplements	Vitamin supplements actively increase the risk of小题5:______.
You can become小题6:_____ to solariums	The solarium may bring about changes to the小题7:______just like drugs do.
小题8:_____long exposure to artificial lights	*You are likely to小题9:_____from breast cancer, obesity and depression after long exposure to artificial lights. *The natural biorhythms of your bodies will be disturbed and you will find it not小题10:______to fall asleep.

 

After many attempts, she ________ managed to get promotion.

A．immediately

B．suddenly

C．naturally

D．eventually

Would it be ________ for you to pick me up at four o’clock and take me to the airport?

A．free

B．vacant

C．handy

D．convenient

It took me quite a long time to ________ the new environment here.

A．adapt to

B．relate to

C．apply to

D．attach to

----Did you look up the time of the high-speed trains to Shanghai?
----Yes, the early train is __________ to leave at 5:30 a.m.

A．likely

B．possible

C．due

D．about

 小题1:    If you use it often and in the right ways, you will become a more skilled thinker and your ability to focus will increase. But if you never use your brain, or abuse it with harmful chemicals, your ability to think and learn will decrease. Here are some simple ways that may help you.
   小题2:   
Don’t you feel drained(劳累) after a couple of hours of watching TV? Your eyes are sore and tired of being focused on the light box for so long. When you feel like relaxing, try reading a book instead. If you’re too tired, listen to some music. When you’re with your friends or family, leave the tube off and have a conversation. All of these things use your mind more than television and allow you to relax.
Exercise.
I used to think that I’d learn more by not exercising and using the time to read a book instead.     小题3:    It improves productivity(生产力) during the time afterwards. Using your body clears your head and creates a wave of energy. Afterwards, you can concentrate(专注) more easily.
Read challenging books.
If you want to improve your thinking and writing ability, you should read books that make you focus. Reading a classic novel can change your view of the world and will make you think in more elegant English.    小题4:    Re-read it when necessary, and you’ll soon grow accustomed(习惯) to the author’s style.
Early to bed, early to rise.
   小题5:    You’ll be the most energetic if you go to bed early and don’t sleep for more than 8 hours. In my experience the early morning hours are the most productive. If you have the opportunity, take a 10-20 minute nap(小憩) when you are hit with a wave of drowsiness(睡意).

A．Take a time to reflect.

B．Reduce television watching.

C．Spending some time alone will be helpful.

D．Your brain needs exercise just like a muscle (肌肉).

E. Don’t be afraid to look up a word if you don’t know it.
F. Nothing makes it harder to concentrate than sleep loss.
G. But I realized that time spent exercising always leads to greater learning.