单词：percent test
单词：percent test 相关文章
MARY LOUISE KELLY, HOST: Now an estimated 4 percent of Americans have food allergies, and that can show up very early in life. But many kids actually outgrow some of their allergies. NPR's Allison Aubrey reports on a surprisingly simple test that can
2017年NPR美国国家公共电台9月
National Railway's Test Become Intellectual Challenge: Ticket Buyers With the Spring Festival Holiday right around the corner, huge numbers of people are already going online, booking train tickets for the most important vacation of the year. However
2015CRI中国国际广播电台
[00:00.00]1.W:Hi,Frank.What are you up to?Is that really a French grammar book? [00:08.12]M:Well,I'm trying to teach myself some French. [00:11.39]For I want to go to Paris next semester. [00:13.87]I don't want to sound like just another tourist. [00
英语四级听力练习集锦
From VOA Learning English, this is the Health Lifestyle report. Scientists in Australia say they have developed the worlds first blood test to find a deadly skin cancer in its early stages. They say the test could save thousands of lives each year. C
2018年VOA慢速英语(九)月
By David McAlary Washington 11 May 2006 Scientists have developed a cheap, rapid test to determine who has trachoma, the leading infectious cause of blindness in poor countries. The researchers say th
2006年VOA标准英语（五月）
By Nancy Steinbach Broadcast: July 9, 2003 This is Steve Ember with the VOA Special English Health Report. An American study has shown mixed results in testing the effects of a drug as a way to preven
VOA2003（下）-环境与健康