更多"A team of international researchers"的相关试题:
[单项选择]A team of international researchers has found new evidence that an endangered subspecies of chimpanzee is the source of the virus that causes acquired immune deficiency syndrome (AIDS) in humans. Experts said the finding could lead to new treatments for AIDS and contribute to the development of a vaccine against the disease.
The research team said the chimp -- a subspecies known as Pan troglodytes native to west central Africa carries a simian immunodeficiency virus (SIV) that is closely related to three strains of human immunodeficiency virus (HIV), the virus that causes AIDS. One of these strains, HIV-1, has caused the vast majority of the estimated 30 million HIV infections around the world.
The researchers are uncertain when the chimp virus, called SIVcpz (for simian immunodeficiency virus chimpanzee), first infected humans, although the oldest documented case of HIV has been linked to a Bantu man who died in Central Africa in 1959. But they said the virus, which does no
A. hunting and killing more chimpanzees.
B. more champ hunters moving to cities.
C. people’s changed sexual behaviour.
D. travelling to more African countries.
[单项选择]The team has been working overtime on the research project （）.
A. lately
B. just now
C. late
D. long ago
[单项选择]TEAMS
Each soccer team has eleven players and three substitute players. The team consists of a goalkeeper, defenders, midfield players, and forwards. The aim of the game is to get the ball into your opponent’s goal.
THE MATCHHow long does a football match usually last
[A] 45 minutes. [B] 60 minutes.
[C] 90 minutes. [D] 105 minutes.
[单项选择]
TEAMS
Each soccer team has eleven players and three substitute players. The team consists of a goalkeeper, defenders, midfield players, and forwards. The aim of the game is to get the ball into your opponent’s goal.
THE MATCH
A game of soccer is called a match and is split into two halves of 45 minutes each, with a 15 minute break at half time. A referee (裁判) and two assistants make sure that nobody cheats or breaks the rules.
GOALKEEPING
Goalkeeping is a special skill. While the rest of the team can afford to make mistakes, if the goalkeeper makes one, it usually results in a goal for the opposition.
Above Your Head The best way to catch a ball above your head is by joining the thumbs and forefingers of your hands together so there is a small arch between your hands.
Chest or Head Height Jump off one leg and cradle the ball comfortabl
A. 45 minutes.
B. 60 minutes.
C. 90 minutes.
D. 105 minutes.
