在当今的中国,我们可以看到由于不均衡的饮食和缺乏运动所引发的越来越多的健康问题。我们需要采取行动来解决这一问题。 Listen Read Learn Today in China, we are beginning to see more and more health problems because of poor diet and little exercise. It's h

发表于:2018-12-03 / 阅读(87) / 评论(0) 分类 王强口语 第二册

THE PRESIDENT: Menudo, thank you. Yes, we're glad you're here. Opening Day 2008, tee ball on the South Lawn. (Applause.) I'm proud to be joined by the Commissioner for the day, Roberto Clemente, Jr. Bienvenido. (Applause.) MR. CLEMENTE: Gracias. THE

发表于:2018-12-30 / 阅读(57) / 评论(0) 分类 美国总统每日发言

Shirley: Honey, wait! I've sprained my ankle. Benjamin: Oh, my god, are you OK? Shirley: Of course not! Benjamin: Come on, sit down, and let me have a look. Shirley: The pain is killing me. Benjamin: I told you to wear running shoes. But you don't li

发表于:2018-12-31 / 阅读(71) / 评论(0) 分类 英语大赢家上册

Maria: Hi, Shirley, it's a surprise to see you here! Shirley: Hi, nice to see you! Maria: What are you doing here? Shirley: Jogging. Maria, I want you to meet my husband, Ben. Ben, this is my colleague, Maria. Maria: I am Maria, glad to meet you. Ben

发表于:2018-12-31 / 阅读(86) / 评论(0) 分类 英语大赢家上册

Bush Firm On Boycotting UN Racism Conference If Zionism on Agenda Scott Stearns White House 24 Aug 2001 20:29 UTC President Bush says the United States will 1)boycott an international conference on ra

发表于:2019-01-31 / 阅读(49) / 评论(0) 分类 VOA2001-国际风云(5)

The outer core is in many ways even less well understood, though everyone is in agreement that it is fluid and that it is the seat of magnetism. 外核在许多方面被了解得更少,虽然大家都认为它是液态的,是产生磁力的地方。

发表于:2019-02-25 / 阅读(74) / 评论(0) 分类 万物简史

How and when the Earth got its crust are questions that divide geologists into two broad camps, 地球如何有了地壳,何时有了地壳,这两个问题把地质学家分成两大阵营, those who think it happened abruptly early in the Eart

发表于:2019-02-25 / 阅读(67) / 评论(0) 分类 万物简史

The most notorious such quakes ever to hit the United States were a series of three in New Madrid, Missouri, in the winter of 1811-12. 在美国经历过的这类地震当中,最著名的要算是1811-1812年冬发生在密苏里州新马德里的一

发表于:2019-02-25 / 阅读(75) / 评论(0) 分类 万物简史

Working alone in the lab on the morning I passed through was a cheerfully grizzled, looking fellow in a blue work shirt 一天上午,我从里面经过,只见一个身穿蓝色工作服、头发灰白的人独自在实验室里忙碌。 whom I re

发表于:2019-02-25 / 阅读(74) / 评论(0) 分类 万物简史

Anyone in a tall building in Omaha or Des Moines, say, 要是有人比如说在奥马哈或得梅因的高楼上, who chanced to look in the right direction would see a bewildering veil of turmoil followed by instantaneous oblivion. 恰好看着那个

发表于:2019-02-25 / 阅读(66) / 评论(0) 分类 万物简史

Hildebrand traveled to the site and decided fairly swiftly that they had their crater. 希尔德布兰德来到该地,很快就得出结论,他们找到了想要找的大坑。 By early 1991 it had been established to nearly everyone's satisfacti

发表于:2019-02-25 / 阅读(92) / 评论(0) 分类 万物简史

It was equally dismissive of convection and seafloor spreading. And in Basin and Range, published in 1980, John McPhee noted that even then one American geologist in eight still didn't believe in plate tectonics. 它同样不承认对流理论和海床

发表于:2019-02-25 / 阅读(79) / 评论(0) 分类 万物简史

The outline of Gondwana, a once-mighty continent connecting Australia, Africa, Antarctica, and South America, was based in large part on the distribution of a genus of ancient tongue fern called Glossopteris, which was found in all the right places.

发表于:2019-02-25 / 阅读(77) / 评论(0) 分类 万物简史

It was scored everywhere with canyons, trenches, and crevasses and dotted with volcanic seamounts that he called guyots after an earlier Princeton geologist named Arnold Guyot. All this was a puzzle, but Hess had a war to take part in, and put such t

发表于:2019-02-25 / 阅读(70) / 评论(0) 分类 万物简史

There was one other major problem with Earth theories that no one had resolved, or even come close to resolving. That was the question of where all the sediments went. Every year Earth's rivers carried massive volumes of eroded material500 million to

发表于:2019-02-25 / 阅读(67) / 评论(0) 分类 万物简史

Let us pause for a moment and consider the structure of the atom as we know it now. Every atom is made from three kinds of elementary particles: protons, which have a positive electrical charge; electrons, which have a negative electrical charge; and

发表于:2019-02-25 / 阅读(107) / 评论(0) 分类 万物简史

This was an amazing disclosure. 这句话里包含着丰富的历史内容。 Joseph Banks was England's greatest botanist, and the Endeavour voyage that is the one on which Captain Cook charted the 1769 transit of Venus 约瑟夫班克斯是英国最伟

发表于:2019-03-04 / 阅读(139) / 评论(0) 分类 万物简史

This was truly startling. The universe was expanding, swiftly and evenly in all directions. It didn't take a huge amount of imagination to read backwards from this and realize that it must therefore have started from some central point. Far from bein

发表于:2019-03-10 / 阅读(131) / 评论(0) 分类 万物简史

Goodness knows what the results would be if anyone attempted a similar exercise with the planet's estimated 20,000 types of lichens, 50,000 species of mollusk, or 400,000-plus beetles. 要是有人试图对这颗行星上的大约2万种地衣、5万多

发表于:2019-03-17 / 阅读(428) / 评论(0) 分类 万物简史

In principle you ought to be able to go to experts in each area of specialization, ask how many species there are in their fields, then add the totals. 原则上,我们可以去找一找每个专门领域的专家,问一问他们的领域里有多少

发表于:2019-03-17 / 阅读(419) / 评论(0) 分类 万物简史