In a six-week study, experts found people who played online games designed to improve their cognitive(认知的) skills didn't get any smarter.

More than 8,600 people aged 18 to 60 were asked to play online brain games designed by the researchers to improve their memory, reasoning and other skills for at least 10 minutes a day, three times a week. They were compared to more than 2,700 people who didn't play any brain games, but spent a similar amount of time surfing the Internet and answering general knowledge questions. All participants were given a sort of I.Q test before and after the experiment.

Researchers said the people who did the brain training didn't do any better on the test after six weeks than people who had simply been on the Internet. On some sections of the test, the people who surfed the Net scored higher than those playing the games.

"If you're (playing these games) because they're fun, that's absolutely fine," said Adrian Owen, the study's lead author. "But if you're expecting (these games) to improve your I.Q., our data suggests this isn't the case," he said during a press briefing on Tuesday.

One maker of brain games said the company's games have been proven to boost brain power.

"Their conclusion would be like saying, 'I cannot run a mile in under 4 minutes and therefore it is impossible to do so," Aldrich said in a statement.

"There is precious little evidence to suggest the skills used in these games transfer to the real world," said Art Kramer, who was not linked to the study and has no ties to any companies that make brain training games.

Instead of playing brain games, Kramer said people would be better off getting some exercise. He said physical activity can spark(激发) new connections between nerves and produce new brain cells. "Fitness changes the building blocks of the brain's structure," he said.

. It can be inferred that the online brain games mentioned in the text are_____________.

A. costly     B. unreliable      C. illegal    D. effective

. Which of the following statements is true about the experiment in the second paragraph?

   A. The experiment lasted for a week.

B. Age didn’t affect the result of the research.

C. Every person played online brain games three times a day.

D. People who didn’t play online brain games did better in I.Q test

. What can we learn from the text?

   A. Playing games which are fun can improve your I.Q.

B. There is a lot of evidence to suggest skills can transfer to the real world.

   C. Do physical activity can boost your brain power.

D. Playing online games can spark new brain cells

The underlined sentence suggests that ___________.

   A. The research was not linked to the study  

B. Those playing the games can score higher in the test

C. playing the games can spark new connections between nerves

D. This isn’t the case that these games can improve your I.Q. 

H5N1 avian influenza, commonly known as bird flu (流感), has killed at least 15 people across Asia and was proved in China on January 27. No human cases have been found in the main??land, but 13 of the country’s 31 provinces have reported the disease in poultry.

The Chinese government has taken measures to prevent and control the disease. Poultry within 3 km of infected (受感染的) farms is to be killed and those within 5 km vaccinated (接种疫苗). At the same time, there will be continuous monitoring and daily reports on the disease across the country, and in??creased production of bird flu vaccines.

Among the 11 Asian countries and regions having bird flu in animals, only Vietnam and Thailand have reported human cases. The people infected were reported to have caught the disease from poultry.

While the World Health Organization ( WHO) says there is “no proof (证据) of human-to-human infection (传染)” of bird flu, the big fear is that the disease could combine with a human flu virus (病毒) to produce a deadly new disease that will kill millions of people across the world. Many Asian farmers live closely with their animals and sell live chickens in the market. This greatly increases the chance of humans being infected with bird flu.

A spokesman of the WHO said that Asian countries having bird flu should introduce a more healthy way of raising and selling chickens. The people there have to completely change their way of life and manners towards animals. Here are some safety measures for people to stay healthy;

*   Keep fit through usual exercise;

*   Avoid infected poultry and infected people;

*   Avoid eating uncooked or under-done poultry and eggs;

*   Make sure there is always fresh air in your home;

*   Cover your mouth and nose when coughing or sneezing;

*   Wash your hands as often as possible.

What does the underlined word “poultry” mean?

A. Wild birds.

B. Wild animals.

C. Home-raised birds.

D. Home-raised animals.

From the passage, we learn that __________.

A. infected poultry within 3 km was killed in China

B. the first bird flu case was proved in China on Jan. 27

C. human infected cases were found in 11 Asian countries

D. over two thirds of China have been affected by the bird flu

What do people fear most?

A. Poultry will infect many people.

B. There will be human-to-human infection.

C. The disease can spread quickly among people.

D. A new disease combining bird flu and a human flu will break out.

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