读下图:“人民币汇率中间价图表”,不考虑其他因素影响,可以得出的结论是 ①2011年1至4月,中国学生到美国留学需要的费用减少了②2011年1至4月,美国居民来中国旅游消费的费用减少了③2011年1至4月,中国出口到法国的纺织品更具竞争力了④2011年1至4月,中国从德国进口的机械设备变得便宜了
The moment ______Leo will never forget is ______he joined the Air Force
I prefer to work here because salaries are higher here than ______in my country.
The girl ___on the ground ___to me that she had ____the book on the shelf.
______himself to his research on the IT technology, he soon made a breakthrough.
_____the cause of the oil leaks, the specialists can not draw a conclusion before completing a thorough and detailed investigation.