左沐熙

各位同学们，为了督促帮助大家持续提升英语能力，培君老师们特意给大家准备了托福每日一包。每天覆盖听说读写内容，坚持完成两周以上，就能见到自己的英语能力不断上涨哟。



1.听写包 答案：

Even the model supporters are uncomfortable claiming that it explains every volcanic anomaly,

and like any popular theory, I suppose, it has some determined critics.
These critics have put forth a number of alternative theories, all unproven so far.
But one well-regarded theory is the Crack Hypothesis,
which assumes that hot spots are created when a piece of the crust gets stretched thinner and thinner and the resulting stress causes small cracks
to open up at weak spots in the crust,
and it’s through these cracks that magma pushes up to form volcanoes.
Proponents of the crack hypothesis consider this a widespread phenomenon and believe that magma’s not coming up from deep within the Earth’s interior,
but rather from just beneath the surface crust.
This hypothesis is attractive, because
it fits with what we already know about plate tectonics and it fits what we know about some secondary smaller hot spots, but
how well does it explain the Hawaiian Islands?
Could a series of random cracks produce that same particular string of Islands that’s sequenced so neatly from old to young?
You know, it worries me when a theory depends on coincidence to produce results.
虽然这个模型的支持者们都不愿宣称这个理论能解释所有异常的火山，
像所有的流行理论一样，我认为它也有一些很坚决的批评家。
这些批评家提出了大量的可替代理论，所有的这些理论目前都未得到证明。
不过有一个很值得考虑的理论，那就是裂缝理论，
这一理论认为当一块地壳被拉伸得越来越薄时就产生了热点，同时产生的压力导致小裂缝
在地壳不牢固的地点打开，
而岩浆正是通过这些裂缝上涌形成火山的。
裂缝理论的支持者们认为这是一个广泛分布的现象，并相信岩浆不是从深层的地球内部出来的，
而只是从表面的地壳下喷涌而出的。
这个理论很有吸引力，因为
它符合我们已知的关于板块构造论的知识，而且符合我们对一些次要的更小的热点的了解，但是
它在解释夏威夷群岛方面表现如何呢？
一系列杂乱的裂缝能产生同样特殊的按照形成时间长短排列得如此有序的岛屿群吗？
当一个理论要依靠巧合才能得出结果时，真的令我忧心忡忡。


2. 阅读包答案：

考虑到组成大部分物种的昆虫的巨大数量，认为半数的已知物种栖息在世界的雨林中这一事实看起来并不令人吃惊。


3.写作包答案：

Beijing, the capital of the People's Republic of China, is the nation's political and cultural center. Some 700,000 years ago, Peking man appeared at Zhoukoudian, 48 kilometres southwest of Beijing. At the beginning of the 10th century, it became the second capital of the Liao Dynasty. From then on, Beijing had been the capital of the Jin, Yuan, Ming and Qing Dynasties until 1911. On October 1st, 1949, Chairman Mao proclaimed to the whole world the founding of the People's Republic of China in Beijing. Beijing has a population of over 20 million; about 10 million live in the city proper and the rest on the suburbs.