... everything we want. Economics deals with this problem through the concept of opportunity cost, which simply refers to whether someone’s time or money could be better spent on something else.Every hour of our time has a value. For every hour we work at one job we could quite easily be doing anothe...
原句是This is the famed citation index, that is to say the number of times a paper has been quoted elsewhere in the scientific literayure, the assumption being that an important paper will be cited more often than one of small account. one of后不是应该接名词复数吗？而...
In his free time, he enjoys what he likes. In his garden, he grows all kinds of flowers. He has a green thumb, doesn't he? When it is______(下雨) , he takes pleasure in looking at his flowers by the garden. Or sometimes he picks some flowers to his wife as a gift.
...weeks to clean and tidy, their longest break in years from lives of toil in Beijing. 这家的户主是一对50多岁的夫妇，已经做了祖父母的他们一下子有了六周的时间整理屋子。在北京辛苦打工多年，这次是他们休息时间最长的一次。曹老...
...Washington, where the kamikaze terrorist severely damaged the nerve center of American military power, politicians beat war drums as our allies pledged solidarity and registered their disgust.译文：在华盛顿，恐怖主义敢死队严重破坏了美国军事力量的神经中枢，政治家们...
...uded in the preliminary draft.这些细节没有包括在初稿中。Names of past members are not included in the list. 以前成员的姓名没有列在名单中。The transfer from the airport to the hotel is included in the price. 票价包括从机场转车到旅馆的费用。但没有见过in...
...on why costs are so high is the restrictive guild-like ownership structure of the business. Except in the District of Columbia, non-lawyers may not own any share of a law firm. This keeps fees high and innovation slow. There is pressure for change from within the profession, but opponents of change ...
...d. 努力干吧，你会成功的。Go at once, and you will catch up with them. 快去，那样你就会赶上他们。Just press this button, and you’ll start the engine. 只要按一下这个按钮便可启动这台发动机了。2. 陈述句的主语是 he / she：Ask her and she will tell you...
...后接“ have been + 现在分词”。如：They must have been enjoying themselves. 他们一定玩得很痛快。（《薄冰英语惯用法词典》p.590） must 表示推测意义时，反义疑问句结构如下：(1) 如果陈述句部分的谓语动词是must be ，附加问句可以用 m...
If
anything the developments of the past week reinforced that ending US military
involvment Afghanistan now was the right decision.American
troops cannot and should not be fighting in a war and dying in a war that
Afghan forces are not willing to fight for themselves.以上是拜登原话。请教...
...w she thought (that) the machine worked.4.
They mentioned the name of the men (who) they knew (that)
you had spoken to.5.
It is exciting but nowhere near as
colorful.能否分析一下这些句子的语法结构，尤其是第五句！2,3,4句能否详细得讲解一下他们的语...
In terms of artistic value,it is hard to say that one country 's art form is greater than____.A .that of another B. another one C .one of another D. one another请问老师，为什么这里不用another one ，做这种题的思路应该是怎样的？&nb...
Today's arithmetic lesson is on the addition of proper fractions. Please insert yesterday's homework in the proper slot."on是比较正的学术类的关于，the addition of proper fractions是真分数的加法的意思吗？proper还有这个用法呢吗？