once upon a time从前no wonder难怪，怪不得decline with thanks婉言谢绝account for说明(原因等)allow for考虑到arrive at达成，得出ask for请求，要求begin with从开始break off断绝，结束break up中止，...
Physical FitnessPhysical fitness is today’s hot topic. And wherever you turn, you hear something new. But is it all true?The more you sweat, the more ...
come/go into effect生效，实施catch one eye引人注目make a face做鬼脸catch fire着火make friends交朋友，友好相处make fun of取笑，嘲弄lose heart丧失勇气，失去信心get hold of抓住，掌握throw/cast l...
and so on等等all at once突然;同时，一起once(and)for all一劳永逸，限此一次by oneself独自地，单独地other than不同于all right好，行ever since从那时起，自那时以来ever so非常，极其so…as to结果是;如此……以至于at...
动词不定式可以在句子中用作状语，有下列几种情况：[A] 放在不及物动词(come,go,stop,finish,wait等词)的后面。如：He came to see her yesterday.(他昨天来看望她)(表示来的目的)/ I stopped to have a rest.(我停下来休息一...
Motoring Technology1.2 million road deaths worldwide occur each year,plus a further 50 million injuries.To reduce car crash rate,much research now is ...
go before居前have to/have got t0不得不，必须help oneself自取所需(食物)keep out of躲开，置身…之外get out of逃避，改掉have get有give oneself up自首，投降，投案go along with陪同前往，随行g0 in fo...
Gross National HappinessIn the last century, new technology improved the lives of many people in many countries. However, one country resisted these c...
Can Buildings Be Designed to Resist Terrorist Attack?In the aftermath of the terrorist attack on the World Trade Center, structural engineers are try...
From Ponzi to MadofThe year was 1920. The country was the United States of America. The man's name was Charles Ponzi. Ponzi told people to stop depos...
Operation MigrationIf you look up at the sky in the early fall in the northern part of North America, you may see groups of birds. These birds are fly...
答案在下一页One Good Reason to Let Smallpox LiveIt's now a fair bet that we will never see the total extinction of the smallpox virus.The idea was to cap t...
Investment and ConsumptionInvestment in the public sector,such as electricity,irrigation,public services and transport (excluding vehicles,ships and p...
The Effects of Global Warming on WeatherThere are hidden factors which scientists call "feedback mechanisms”。 No one knows quite how they will interac...
名词或代词作主语时和谓语之间的单复数的一致问题：1.谓语和谓语基本保持单复数的一致,即：主语是可数名词单数或不可数名词时,谓语动词用单数形式：如：The computer was a great invention.(计算机是个了不起的发明)The water in the glass is ver...
Studies Show US Spending Doesn’t Get Best HealthThe United States many spend twice as much on health care as other rich countries1, but it is not gett...