They believe the simian immunodeficiency virus,S.I.V., probably crossed from chimpanzees to humans in the last one hundred years.

VOA: special.2009.09.08

Yet growers expect their current crop to be almost ten percent bigger than the last one.

VOA: special.2011.02.11

The last one,by astronaut Gordon Cooper, circled the Earth twenty-one times.

VOA: special.2009.06.17

"Leaves.On the plant. When the last one falls I must go,too.

VOA: special.2009.08.01

It was the last one on the vine.

VOA: special.2009.08.01

"I want to see the last one fall.

VOA: special.2009.08.01

"It is the last one," said Johnsy.

VOA: special.2009.08.01

The last one.Just follow along till you catch up. All right, guys, today we are gonna beobserving the behavior of planaria, aka flatworms.

VOA: standard.other

Last week,W.W.E.officials reported the company earned more than one hundred seventeen million dollars in the fourth financial period of last year.

VOA: special.2010.02.19

The United Nations Food and Agriculture Organization estimates that more than one billion of the world's people faced hunger last year.

VOA: special.2010.01.11

The American Lung Association said Pittsburgh was last in the nation in one of three measures of air quality.

VOA: special.2009.07.13

The International Maritime Bureau reports there were one hundred eleven pirate attacks in waters near the Somali coast last year.

VOA: special.2009.05.27

Today we tell about one of the most important scientific discoveries of the last century -- the development of HeLa cells.

VOA: special.2010.07.21

More than six hundred seventy-one thousand foreign students attended an American college or university during the last school year.

VOA: special.2009.12.03