SouthAfricanresearchersattheinternationalAIDSconference...

问题详情：

South African researchers at the international AIDS conference in Vienna,Austria have announced major progress in the fight against the researchers say their study shows a gel（胶体）substance reduced the risk of HIV infection among women who used it.

The gel contains tenofovir,which is a common drug used to treat people with HIV,the virus that causes AIDS.

The study was done by South African scientists with the Center for the AIDS Program of Research in South st nine hundred sexually active women between the ages of eighteen and forty took part in were from KwaZulu-Natal,South were given the gel containing other half were given a gel without an active were told to use the gels twelve hours before having sex and again within twelve hours after having sex.

The study lasted thirty n who used the tenofovir gel reduced their risk of HIV infection by thirty-rune the study found that the women who used the gel more often had even better n who used the gel more than eighty percent of the times when they had sex had fifty-four percent fewer HIV infections.

Health experts say the results of the study show that tenofovir gel can empower ver,researchers say they will study why the gel did not protect in all scientists say the amount of tenofovir in the gel may be too rs say some women may have had sex with infected men who had very high amounts of the virus. The researchers also say they will carry out more studies to confirm the results.

's the main idea of for the passage?

h African researchers find a use for tenofovir.

archers have an international AIDS conference in Vienna.

archers in South Africa announce progress in fight against AIDS.

h African researchers are doing their best to protect women.

can we know from the passage?

tenofovir gel works on both men and women.

more tenofovir gels a woman uses,the better it is.

fovir has never been used to fight against AIDS before.

ng the tenofovir gel may protect a woman from HIV virus.

archers still don't know why       .

tenofovir gel can empower women                            tenofovir gel does not protect in all cases

amount of tenofovir in the gel is so low                     men have very high amounts of HIV virus

【回答】

CDB

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