文章列表

• 1.美国英语听力80篇3 Lesson43
• [00:06.24]For years, many scientists have considered walking on two legs as one sign of being human. [00:15.46]Early humans were not thought to have u...
• 2.美国英语听力80篇3 Lesson42
• [00:05.56]Weather experts say this spring was the warmest in the United States in the past century. [00:13.66]They say the average temperature across ...
• 3.美国英语听力80篇3 Lesson41
• [00:07.21]NASA's Stardust spacecraft has successfully deployed a device that will collect extremely small particles in space. [00:16.95]The particles ...
• 4.美国英语听力80篇2 Lesson40
• [00:05.25]American scientists say they have found the strongest evidence yet [00:11.96]linking a breathing problem called sleep apnea to high blood pr...
• 5.美国英语听力80篇2 Lesson39
• [00:05.75]The American space agency has released to the public the first of many new pictures of Jupiter's Moon,Io. [00:15.41]NASA's Galileo spacecraf...
• 6.美国英语听力80篇2 Lesson38
• [00:05.49]Why are some people left-handed? [00:09.09]Scientists have been trying to answer that question for many years. [00:14.32]Research has shown ...
• 7.美国英语听力80篇2 Lesson37
• [00:05.15]Many people are visiting a museum in Chicago, Illinois to see ancient documents called the Dead Sea Scrolls. [00:15.44]The world famous writ...
• 8.美国英语听力80篇2 Lesson36
• [00:06.37]Some people cannot see all colors correctly. [00:10.92]They cannot see all the colors in a rainbow or a sunset. [00:16.40]They cannot tell i...
• 9.美国英语听力80篇2 Lesson35
• [00:04.44]New studies say that eating chocolate may be good for your heart. [00:10.48]Research shows that eating chocolate may reduce the chance of de...
• 10.美国英语听力80篇2 Lesson34
• [00:05.62]34) Ancient Quasar [00:11.96]Astronomers have discovered what they say is one of the earliest known structures ever to form in the universe....