Read the following article and select the best answer. Article: If music makes you smarter, and exercise helps brain function, can exercising to music really boost brainpower? Some researchers said it could. Volunteers who listened to Vivaldi~ "Four Seasons" while working out on a treadmill did much better on a test of verbal ability than when they exercised without music, a team at prefix = st1 /OhioStateUniversityfound. "Evidence suggests that exercise improves the cognitive performance of people with coronary artery disease ," said psychologist Charles Emery, who led the study. "And listening to music is thought to enhance brainpower. We wanted to put the _ together," Emery added in a statement. Writing in the latest issue of the journal Heart & Lung, Emery and colleagues said they studied 33 men and women taking part in a cardiac rehabilitation program after having bypass surgery, angioplasty or other procedures to treat clogged arteries. The volunteers said they felt better emotionally and mentally after working out with or without the music. But their improvement on the verbal fluency test doubled after listening to music on the treadmills ."Exercise seems to cause positive changes in the nervous system, and these changes may have a direct effect on cognitive ability," Emery said. "Listening to music may influence cognitive function through different pathways in the brain. The combination of music and exercise may stimulate and increase cognitive arousal while helping to organize cognitive output." Emery said he now wanted to test people using music of their own choice. "We used The Four Seasons' because of its moderate tempo and positive effects on medical patients in previous research," Emery said. "But given the range of music preferences among patients, it's especially important to evaluate the influence of other types of music on cognitive outcomes." Question: If we can combine music and exercise, we can _ - stimulate and increase cognitive arousal while have difficulty in organizing cognitive output - neither stimulate and increase cognitive arousal nor help to organize cognitive output - help to organize cognitive output at the expense of cognitive arousal - stimulate and increase cognitive arousal as well as help to organize cognitive output
stimulate and increase cognitive arousal as well as help to organize cognitive output
------
Read the following article and select the best answer. Article: The Internet has revolutionized our lives to such an extent that for most people, the global network has become more than just a tool but rather an indispensable aid in everyday life. More and more people go online as wireless networks have brought the Internet closer and closer: it's on our mobile phones, in our cars and TV sets, in hospital surgery rooms and in fishing boats that battle the waves of the Atlantic. And this revolution has brought along with it a new way of shopping. Both big and small, e-commerce websites have literally flooded the Internet by the hundreds of thousands. Anything you can buy from a brick and mortar store you can also buy online: from food and clothes to guns and bombs, no matter what you're looking for, you're bound to find the right online store with just a few clicks of the mouse. This revolution has sent cold trembles down the backbones of brick and mortar business owners. And what was their reaction? They've opened online stores to go hand in hand with their conventional businesses. Nowadays, every "Mom and Pop's" cheesecake store also has a website. In a recent survey, 68% of small business owners have stated that they are scared of being put out of business by the powerful flood that e-commerce has become. So it's no wonder many of them have decided to join the revolution and establish some kind of an online presence even though most of them have stated that they dislike the Internet. But do the big players have reasons to be afraid? Are we going to start seeing ghostly, deserted Wal-Marts across the country? Probably not in the near future but the day will come when most people will just stop shopping offline anymore. A trip to Wal-Marts wastes time, burns gas and sometimes adds a few extra dots on the stress counter. The recent advancements in mobile technology and the introduction of mobile phones with improved web capabilities has even made some people order their groceries when they get out from work and have them delivered at their doorstep by the time they get... Question: According to Para 5, the greatest benefit of online shopping is _ . - to save time - to follow the fashion - to release pressure - to protect environment
to save time
------
Read the following article and select the best answer. Article: More and more birds are flying to settle at Qinghai Lake, one of the highest inland lakes in China, thanks to the protection efforts of local governments. Covering an area of over 4,000 square kilometers, Qinghai Lake is also the country's biggest salt-water lake. Located in Northwest China's Qinghai Province, the lake is famous for the two islands at its northwest point--Cormorant Island and Egg Island. The two islands have plenty of floating grass and various schools of fish, offering rich food sources for birds. The islands have become a paradise for different kinds of groups of birds and have been called 'Bird Islands'. Each March and April, when ice and snow covering the Qinghai-Tibet Plateau starts to melt, over 20 kinds of birds fly to the Bird Islands to lay eggs. During the months, flocks of birds cover the whole sky over the islands and birds eggs can be found everywhere. Visitors can hear the singing of birds from miles away. These have become a world famous symbol of the lake. To protect this paradise for birds and support calls for ecological protection, China set up the Qinghai Lake Natural Protection Zone at the end of 1997. Meanwhile, the State has pointed out the Bird Islands and Spring Bay of the Qinghai Lake as central protection zones. Inspection officials and management employees often patrol the lake, improving local residents' knowledge of related laws and spreading knowledge about animal protection to visitors. They are making great efforts to call on people to love and protect the birds. At the same time, they have built special fences around the island area, to prevent wolves, foxes and other carnivorous animals, as well as illegal hunters from breaking up the birds' nest-building, egg-laying and breeding. As a result, more and more birds are coming to the islands for sheltering and breeding. Question: Why are more and more birds coming to the biggest salt-water lake in the Great Northwest? - Because it is getting warmer and warmer. - Because it is being reformed - Because environments there are getting more and more agreeable for them to live in. - Because the people there are becoming richer and richer
Because environments there are getting more and more agreeable for them to live in.
------
Read the following article and select the best answer. Article: Ever since man began to use the telephone, there have been new problems arising from the carrying of messages. At first, each message was carried by a pair of overhead wires. As a result, telephone exchanges were soon surrounded by thousands of wires. The wires were then replaced by cables ,each containing many pairs of wires. Each cable is capable of carrying many messages. These cables, laid underground, replaced the overhead wires. The more _ telephone services have become, the more demand for these services has increased, particularly the demand for long-distance services. In China, for example, this growth is now over 30% every year. Long-distance telephone exchanges are usually in crowded cities, where is not easy to lay new labels for expanding services. The use of radio to send telephone message and to link all telephone exchanges makes it possible to get rid of overhead wires and some underground cables. Now man has invented the microwave system ( ). In a microwave system messages from various places can be brought together, and then they are sent out and received by radio. After that, the messages are split into their original form. Finally, they are sent to the places where they are going to be sent. Question: A cable is different from an overhead wire, because it _ . - is made of wood - needs more exchange - carries more messages - is much longer
carries more messages
------