单词:optional variants
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An Important tip! ''Tipping', gratuity or 'service' is handled very differently in the UK and America. It's important to get this right when you visit each place as it can affect whether the staff in bars, cafe, restaurant, hotels, hairdressers, and
This is Scientific Americans 60-Second Science, Im Karen Hopkin. This will take a minute. For those of you who love a tall tale, the list of genetic variations that determine human height has just experienced a growth spurt. The findings were publish
You cant judge a book by its cover. But you can judge a dog by its coat. You can even read right through to its genes. Because a study in the August 27th online issue of Science shows that just three key genes govern the length and texture of dog fur
[00:03.59] 谈论学习 [00:07.18]How many courses do you have for this semester? [00:11.01]你们这学期上几门课? [00:14.84]A:How many courses do you have for this semester? [00:17.41]A:这学期你们上几门课? [00:19.98]B:Eight altoge
(woman) In the few minutes that remain of today's class, I'd like to discuss next week's schedule with you. Because I'm presenting a paper at a conference in Detroit on Thursday, I won't be here for either Wednesday's or Friday's class. I will, howe
The Bird Flu Recently , the news has been filled with reports of the “bird flu.” Asia is on a region-wide health alert, with governments slaughtering millions of chickens to contain 1 outbreaks
Ella: Its so exciting that youll be spending a month studying in McQuillanland this summer. When do you start packing? Marty: Ive already started. The organizers of the program gave me a list of things I need to bring. Ella: Thats really helpful. Mar
为新猫咪做准备 Take a good, hard look around your house. You might think that there is nothing dangerous for Kitty to go sticking her nose into, but you would be wrong. Everyone knows that cats are instinctually curious. Places humans overlook
It's no secret that good genes can explain why some people age well. But researchers said last Thursday they have identified a specific gene variant that can make people look about two years older than their actual age. 众所周知,有些人看起来
Are American College Entrance Exams Unfair? 美国大学入学考试是不公平的? A growing number of American universities are dropping the entrance exam requirement. More than 800 universities now allow students to apply without an SAT or ACT te
Essential and Optional Things Ella: Its so exciting that youll be spending a month studying in McQuillanland this summer. When do you start packing? Marty: Ive already started. The organizers of the program gave me a list of things I need to bring. E
Scientists say they have made a leap in knowing why some people retain their youthful looks while others age badly. 科学家称他们已经在探究为什么有的人青春长驻而另一些人逐年老去这一问题上取得突破性进展。 They
克里姆林宫决定斯诺登的未来 MOSCOW, June 30 (Xinhua) -- As Edward Snowden has been perching at an international airport of Moscow for a week, Kremlin said Sunday the former CIA contractor's future was not yet on its agenda. The President
A shortage of genes could be to blame for the lack of height in short people, researchers have found. Two studies involving 12,000 people has been carried out in America and found a link between the amount of missing genetic material and a decrease i
WASHINGTON, March 15 (Xinhua) -- Mothers who are overweight or obese during pregnancy are more likely to give birth to bigger babies, new research suggested Tuesday. The study, published in the Journal of the American Medical Association, also found
Transporter of delight 传递快乐的使者 Happiness is in your DNA; and different races may have different propensities for it 基因决定幸福;而不同种族的幸福倾向不尽相同 Born smiling? 天生会笑? THE idea that the human pe
Why a marriage contract and not any other reason for regular annual action? 为什么是一纸婚书而不是其他什么原因使普西芬妮定期往返呢? Here is one. Persephone wasn't released. 我且来举个例子:普西芬妮并没有被放
Business 商业报道 Civilian jet engines 民用航空发动机 Gearing up for a fight 奋力一战 Pratt amp; Whitney hopes a high-tech engine will restore its former dominance. 普拉特惠特尼公司期待其新款的高科技航空发动机能重