[填空题]Psychologists have found that most left-handers have their language center in the right half of the brain.

[填空题]Psychologists have found that most left-handers have their language center in the right half of the brain.

[单项选择]British psychologists have found evidence of a link between excessive Internet use and depression, a research has shown.
Leeds University researchers, writing in the Psychopathology journal, said a small proportion of Internet users were classed as Internet addicts and that people in this group were more likely to be depressed than non-addicted users.
The article on the relationship between excessive Internet use and depression, a questionnaire-based study of 1,319 young people and adults, used data gathered from respondents to links placed on UK-based social networking sites.
The respondents answered questions about how much time they spent on the Internet and what they used it for; they also completed the Beck Depression Inventory--a series of questions designed to measure the severity of depression.
The six-page report, by the university’s Institute of Psychological Sciences, said 18 of the people who completed the questionnaire were Internet addicts.
A. use the Internet more than enough
B. feel depressed when using the Internet
C. seldom connect to the Internet
D. feel depressed without the Internet

[单项选择]
US scientists have uncovered a defence mechanism in bacteria that allows them to fend off the threat of antibiotics.
It is hoped the findings could help researchers boost the effectiveness of existing treatments.
The study published in Science found that nitric oxide produced by the bacteria eliminates some key effects of a wide range of antibiotics.
One UK expert said inhibiting nitric oxide synthesis could be an important advance for tackling tricky infections.
Antibiotic resistance, for example with MRSA, is a growing problem and experts have long warned of the need to develop new treatments. The latest research, done by a team at New York University, showed that in bacteria the production of nitric oxide—a small molecule made up of one nitrogen and one oxygen atom—increased their resistance to antibiotics.
They found the enzymes responsible for producing nitric oxide were activ
A. A kind of sports
B. A tough task
C. A piece of cake
D. A kind of medicine