[00:03]The researchers studied the behaviour of female brown capuchin monkeys.
[00:14]Being a male has always been dangerous. There are about 105 males born
[00:21]for every 100 females, but this ratio drops to near balance at the age of
[00:28]maturity, and among 70-year-olds there are twice as many women as men.
[00:38.11]You might be swallowed by a whale and find yourself sitting in its belly
[00:42.94]and bleached white by its gastric juices, like the sailor who tumbled overboard
[00:47.97]from his ship and was found by his crew inside the whale's stomach
[00:56.91]When animals breathe they exhale carbon dioxide, which is a waste product
[01:03.69]of animal energy use, and inhale the oxygen they need to create energy.
[01:12.05]The oxygen, of course, comes mostly from plants.
[01:19.43]If ambition is to be well regarded, the rewards of ambition-wealth,
[01:26.13]distinction, control over one's destiny must be deemed worthy of the
[01:32.70]sacrifices made on ambition's behalf.
[01:40.57]Back in 1993, voters focused much of their anger at Democrats,
[01:47.39]holding Republicans in much higher esteem. That's not the case today.
[01:53.85]Recent polls show the disapproval rating for congressional Republicans
[01:59.78]on average exceeds 60 percent.
[02:08.09]A: I remember there is a column called Mosaic on the VOA site.
[02:14.02]B: Yes, it contains a lot of good articles.内容来自 听力课堂网：http://www.tingclass.net/show-8124-237022-1.html