The promise of autonomous vehicles is profound: less traffic, less pollution, fewer deadly accidents, but autonomous vehicles still have a lot to learn, so researchers and engineers are building huge test tracks, like this one in Sweden, to teach aut...
Today is the United Nations International Day for Mine Awareness and Assistance in Mine Action, which provides an opportunity for the world to reflect on both the progress made and the challenges that remain in clearing landmines and unexploded ordna...
U.S. Secretary of State Mike Pompeo has sworn in Elan Carr as the new United States Special Envoy to Monitor and Combat Anti-Semitism. In that role, he will advise Secretary Pompeo on policies and programs concerning anti-Semitism and will represent...
On March 15, intense Tropical Cyclone Idai made landfall in south-eastern Africa and caused a disaster in Mozambique, Zimbabwe and Malawi. In early April, USAID Administrator Mark Green sent Counselor Christopher Milligan to Mozambique. He expressed...
一.本课要点及示例: 在这一课里, 我们要学习助动词 could, c-o-u-l-d, could 和两个助动词短语 would like to, w-o-u-l-d l-i-k-e t-o, would like to 跟 ought to, o-u-g-h-t t-o, ought to. 我们也要学习用连接词 because, b...
美国英语：一.本课要点及示例 在这一课里, 我们要学习的是助动词 should, s-h-o-u-l-d, should 跟 must,m-u-s-t, must 的用法. 我们也要看看这两个助动词的否定式 should not也就是 shouldn't 和 must not 也就是 mustn't 在意...
一.本课要点及示例 在这一课里我们要学习怎么用助动词 can, c-a-n, can, may, m-a-y, may, will,w-i-l-l, will 和might, m-i-g-h-t, might.首先我们依照惯例, 先请你听一段对话, 内容是说 peter 在学校里跟同学 Ma...
一.本课要点及示例 在这课里我们要学习怎么用many, m-a-n-y, many 跟 much, m-u-c-h, much.这两个字都有 "很多" 的意思,可是用法不同.另外我们还要学习用 there is 跟 there are 做句子.首先还是请你听一段对...
美国英语:一.本课要点及示例 今天我们要练习两个词组, 一个是 used to, u-s-e-d t-o, used to, 另外一个是动词加上 to, t-o, to 再加上动词, 也就是 like to do 和 want to go 等等的动词短语.首先请你听一段对话, 内容...
中级美国英语：一.本课要点及示例: 在这课里我们要学习用 one o-n-e one 一个 跟 which one 哪一个 作句子.我们也要学用单字介词, 比方: on, in, under, at, 跟一个字以上, 比较长的介词, 比方: in front of 在什么什么前面, in back of 在什么什么后面 作句子. 我们先学 the one 跟...
