It is necessary to prevent induction motors against overload and undervoltage.

It is agreed that all nations should take measures against terrorism on the basis of the UN_____and other international laws.

A．Charter

B．Constitution

C．Concordance

D．Custody

It is agreed that all nations should take measures against terrorism on the basis of the UN______and other international laws.

A．Charter

B．Constitution

C．Concordance

D．Custody

A．New laws against discrimination should be passed to protect woman's equal rights with men.

B．Changing people's ideas about women is less difficult than changing their behavior.

C．There are some changes in people's ideas about women and their place in society.

D．It is impossible to change the social conception about women.

It is agreed that all nations should take measures against terrorism on the basis of the UN and other international laws.

A．Charter

B．Constitution

C．Concordance

D．Custody

It is agreed that all nations should take measures against terrorism on the basis of the UN and other international laws.

A．Charter

B．Constitution

C．Concordance

D．Custody

听力原文： British investigators have launched conspiracy to commit murder charges against 11 of the 23 suspects in the alleged plot to blow up trans-Atlantic airliners. Investigators say the alleged plotters had bomb-making equipment and they had recorded so-called "martyrdom" videos.

Eight people are being charged with conspiracy to commit murder and preparing to engage in terrorism, a new offense under an anti-terrorism law passed earlier this year. Three others were also charged with terrorist offenses. Eleven other people remain in custody, while authorities decide whether to charge them now or seek additional time to detain and question them. One other person detained, a woman, was released without charge. Metropolitan 'Police Deputy Assistant Commissioner Peter Clarke, who leads police counter terror efforts, said Monday the investigation is far from over.

"The enormity of the alleged plot will be matched only by our determination to follow every lead and line of inquiry." Authorities have until Wednesday to get the judge's permission to continue to hold the remaining suspects.

The alleged plotters were said to have ______.

A．bomb-making videos

B．guns and bombs

C．poisonous gas-making equipment

D．bomb-making equipment

Moderate drinking reduces stroke risk, study confirms. Similar to the way a drink or two a day protects against heart attacks, moderate alcohol consumption wards off strokes, a new study found.

The study also found that the type of alcohol consumed -- beer, wine or liqour -- was unimportant. Any of them, or a combination, was protective, researchers reported in today’s Journal of the American Medical Association. "No study has shown benefit in recommending alcohol consumption to those who do not drink", cautioned the authors, led by Dr. Ralph L. Sacco of Columbia University College of Physicians and Surgeons in New York. But the new data support the guidelines of the National Stroke Association, which say moderate drinkers may protect themselves from strokes by continuing to consume alcohol, the authors said.

The protective effect of moderate drinking against heart attacks is well established, but the data has been conflicting a bout alcohol and strokes, the authors said. The new study helps settle the question and is the first to find blacks and His panics benefit as well as whites, according to the authors. Further research is needed among other groups, such as Asian, whom past studies suggest may get no stroke protection from alcohol or may even be put at greater risk.

Among groups where the protective effect exists, its mechanism appears to differ from the protective effect against heart attacks, which occurs through boosts in levels of so-called "good" cholesterol, the authors said. They speculated alcohol may protect against stroke by acting on some other blood trait, such as the tendency of blood platelets to clump, which is key in forming the blood trait, such as the tendency of blood platelets to clump, which is key in forming the blood dots that can cause strikes.

The researchers studied 677 New York residents who lived in the northern part of Manhattan and had strokes between July 1,1993, and June, 1997. After taking into account differences in other factors that could affect stroke risk, such as high blood pressure, the researchers estimated that subjects who consumed up to two alcoholic drinks daily were only half as likely to have suffered dot-type strokes as nondrinkers. Clot-type strokes account for 80 percent of all strokes, a leading cause of US deaths and disability. Stroke risk increased with heavier drinking. At seven drinks per day, risk was almost triple that of moderate drinkers.

An expert spokesman for the American Heart Association, Who was not involved in the study, said it was well-done and important information. But it shouldn’t be interpreted to mean, "I can have two drinks and therefore not worry about my high blood pressure or worry about my cholesterol," said Dr. Edgar J. Kenton, an associate professor of clinical neurology at Thomas Jefferson University Medical College in Philadelphia. Instead, he said, the study provides good reason to do further research and to add alcohol to the list of modifiable risk factors for stroke.

The new study conducted by Dr. Sacco and his colleagues is unique in that ______.

A．it refutes early studies on the protective effect of moderate drinking against heart attack

B．it confirms early studies of moderate drinking against heart attacks

C．it helps to resolve the disputes over the effect of moderate drinking against stroke

D．it finds that moderate drinking can benefit people of different races equally well

Moderate drinking reduces stroke risk, study confirms. Similar to the way a drink or two a day protects against heart attacks, moderate alcohol consumption wards off strokes, a new study found.

The study also found that the type of alcohol consumed -- beer, wine or liqour -- was unimportant. Any of them, or a combination, was protective, researchers reported in today's Journal of the American Medical Association. "No study has shown benefit in recommending alcohol consumption to those who do not drink", cautioned the authors, led by Dr. Ralph L. Sacco of Columbia University College of Physicians and Surgeons in New York. But the new data support the guidelines of the National Stroke Association, which say moderate drinkers may protect themselves from strokes by continuing to consume alcohol, the authors said.

The protective effect of moderate drinking against heart attacks is well established, but the data has been conflicting about alcohol and strokes, the authors said. The new study helps settle the question and is the first to find blacks and Hispanics benefit as well as whites, according to the authors. Further research is needed among other groups, such as Asian, whom past studies suggest may get no stroke protection from alcohol or may even be put at greater risk.

Among groups where the protective effect exists, its mechanism appears to differ from the protective effect against heart attacks, which occurs through boosts in levels of so-called "good" cholesterol, the authors said. They speculated alcohol may protect against stroke by acting on some other blood trait, such as the tendency of blood platelets to clump, which is key in forming the blood trait, such as the tendency of blood platelets to clump, which is key in forming the blood clots that can cause strikes.

The researchers studied 677 New York residents who lived in the northern part of Manhattan and had strokes between July 1,1993, and June, 1997. After taking into account differences in other factors that could affect stroke risk, such as high blood pressure, the researchers estimated that subjects who consumed up to two alcoholic drinks daily were only half as likely to have suffered clot-type strokes as nondrinkers. Clot-type strokes account for 80 percent of all strokes, a leading cause of US deaths and disability. Stroke risk increased with heavier drinking. At seven drinks per day, risk was almost triple that of moderate drinkers.

An expert spokesman for the American Heart Association, who was not involved in the study, said it was well-done and important information. But it shouldn't be interpreted to mean, "I can have two drinks and therefore not worry about my high blood pressure or worry about my cholesterol," said Dr. Edgar J. Kenton, an associate professor of clinical neurology at Thomas Jefferson University Medical College in Philadelphia. Instead, he said, the study provides good reason to do further research and to add alcohol to the list of modifiable risk factors for stroke.

The new study conducted by Dr. Sacco and his colleagues is unique in that ______.

A．it refutes early studies on the protective effect of moderate drinking against heart attack

B．it confirms early studies of moderate drinking against heart attacks

C．it helps to resolve the disputes over the effect of moderate drinking against stroke

D．it finds that moderate drinking can benefit people of different races equally well

A、to prevent webbed hands and embryonic tails

B、to prevent the existence of useless nerve connections

C、to induce inflammatory responses against foreign pathogens

D、to function in immune cell selection