[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 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.

[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.

[单项选择]Stem Cell Therapy May Help Repair the Heart 　　According to scientists in the USA，stem cell therapy may one day be able to repair the hearts of people with heart failure．Researchers at Pittsburgh University School of Medicine examined 20 patients who had severe heart failure and were going to have surgery． 　　They injected stem cells into the parts of their hearts that were damaged，They then compared their hearts with those of people who had undergone surgery without having the stem cells injected into them(they had also suffered from severe heart failure)．The patients who had had the stem cells injected had hearts that were able to pump(用泵抽运)more blood than the others． 　　According to Professor Robert Kormos，one of t11e researchers，these results could revolutionize heart treatment．Although previous studies had indicated that there might be a benefit，this is the first study that has actually proved that stem cell therapy can help the failing heart work better． 　　All the patien
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B. Wrong
C. Not mentioned

[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 req