A species of armyworm has spread to over 20 African countries and threatens Africa's main food crop -- maize. The warning comes from the United States Agency for International Development, or USAID. Joseph Huesing works as an advisor to USAID. He sus

发表于:2019-01-02 / 阅读(50) / 评论(0) 分类 2017年VOA慢速英语(七)月

Researchers may have found an unusual way to reduce plastic pollution, one bite at a time. It turns out that the common wax worm can eat plastic. Also known as the Galleria mellonella, these worms may help reduce the waste caused by plastic bags. Eac

发表于:2019-01-02 / 阅读(55) / 评论(0) 分类 2017年VOA慢速英语(五)月

Nico Colombant The United Nations mission in the Democratic Republic of Congo is trying to ease renewed tensions involving the new national army and former rebels in the east of the country. The U.N.

发表于:2019-01-03 / 阅读(33) / 评论(0) 分类 VOA2004(上)--国际时事

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. They say that the best offense is a good defense. And the best defense might be the most offensive. Take, for example, the barfing caterpillars of the be

发表于:2019-01-08 / 阅读(47) / 评论(0) 分类 Scientific American(十一)月

By Noel King Kigali 03 October 2007 Conflicting reports are emerging from eastern Democratic Republic of Congo regarding an alleged alliance between Congo's army and outlaw Hutu and Mayi Mayi militias, aimed at purging a rebellion by dissident genera

发表于:2019-01-16 / 阅读(35) / 评论(0) 分类 2007年VOA常速英语(十月)

China and the United States have signed a framework document in an initiative to establish an Army-to-Army Dialogue Mechanism between the two countries. Experts say this will help bolster the bilateral military relationship. CRI's Yu Yang reports. Ge

发表于:2019-03-04 / 阅读(88) / 评论(0) 分类 2015CRI中国国际广播电台