[简答题]Cell phones may help busy executives keep in constant touch with important business associates, but they may also increase their risk of high blood pressure, preliminary research suggests. A study of 10 German mobile phone users found that when they switched on their phone, their blood pressure shot up by 5 to l0 millimeters of mercury, researchers reported in this week’s issue of the international medical journal, The Lancet. Exactly how cell-phone use can lead to increases in blood pressure is unclear, but researchers speculate that the electromagnetic fields emitted by phones may somehow boost pressure. While the blood pressure increases found in the new study are small, they may be detrimental to people who already suffer from hypertension, researchers led by S. Braune of the Neurologische Universitateklinik in Freiburg, Germany, explained.

[简答题]Cell phones may help busy executives keep in constant touch with important business associates, but they may also increase their risk of high blood pressure, preliminary research suggests. A study of 10 German mobfie phone users found that when they switched on their phone, their blood pressure shot up by 5 to 10 millimeters of mercury, researchers reported in this week’s issue of the international medical journal, The Lancet. Exactly how cell-phone use can lead to increases in blood pressure is unclear, but researchers speculate that the electromagnetic fields emitted by phones may somehow boost pressure. While the blood pressure increases found in the new study are small, they may be detrimental to people who already suffer from hypertension, researchers led by S. Braune of the Neurologische Universitateklinik in Freiburg, Germany, explained.

[填空题]Eating fish and walnuts may help keep our spirits up, because they contains ______.

[填空题]All of us who live a busy life may ask this question: how can I find time to read The answer may be 15 minutes a day at any time. No universal formula can be prescribed. Each of us must find our own 15-minutes period each day. It is better if it is regular.
The only requirement is the will to read. With it you can find the 15 minutes no matter how busy the day is. And you must have the book at hand. Not even seconds of your 15 minutes should be wasted when you start to read. Set the book out in advance. Put it into your pocket when you dress. Put another book beside your bed. Place one in your bathroom. Keep one near your dining table.
You can’t escape reading 15 minutes a day, and that means you will read half a book a week, 2 books a month, 20 a year, and 1,000 or more in a life time reading. It’s an easy way to become well read.
How to Find Time to Read
The suitable time may be (46) a day at any time.
It’ll be better if (47)
The only requirement

[单项选择]These exercises will help to keep you （）.
A. stretchy
B. supple
C. elastic
D. gentle

[单项选择]Passage TwoA. It can help people keep alert. B. It can help people keep young.
C. It can help improve people’s memory. D. It can help strengthen people’s bodies.

[填空题]A few simple facts will help you keep cut flowers ______.

[单项选择]

Sports can help you keep fit and get in touch with nature. However, whether you are on the mountains, in the waves, or on the grassland, you should be aware that your sport of choice might have great influence on the environment.
Some sports are resource-hungry. Golf, as you may know, eats up not only large areas of countryside, but also tons of water. Besides, all sorts of chemicals and huge amounts of energy are used to keep its courses(球场) in good condition. This causes major environmental effects. For example, in the dry regions of Portugal and Spain, golf is often held responsible for serious water shortage in some local areas.
There are many environment-friendly sports. Power walking is one of them that you could take up today. You don’ t need any special equipment except a good pair of shoes ; and you don’ t have to worry about resources and your purse. Simple and free, power walking can a
A. Cycling around a lake.
B. Motor racing in the desert.
C. Playing basketball in a gym.
D. Swimming in a sports center.

[填空题]It’s easier to keep busy than to slow down because______.

[单项选择]

Motherhood may make women smarter and may help prevent dementia in old age by bathing the brain in protective hormones, US reseachers reported on Thursday.
Tests on rats show that those who raise two or more litters of pups do considerably better in tests of memory and skills than rats who have no babies, and their brains show changes that suggest they may be protected against diseases such as Alzheimer’s. University of Richmond psychology professor Craig Kinsley believes his findings will translate into humans.
"Our research shows that the hormones of pregnancy are protecting the brain, including estrogen, which we know has many neuroprotective effects," Kinsley said.
"It’s rat data but humans are mammals just like these animals are mammals," he added in a telephone interview. "They go through pregnancy and hormonal changes. "
Kinsley said he hoped public health officials and researchers will look to see i
A. Do You Want to Be Smarter
B. Motherhood Makes Women Smarter
C. Mysterious Hormones
D. An Important Study