宝春

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雅思每日一包。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：

The second category of marine energy that I'll mention is tidal energy.

One major advantage of using the tide, rather than waves, as a source of energy is that it's predictable:
we know the exact times of high and low tides for years to come.
For tidal energy to be effective, the difference between high and low tides needs to be at least five metres,
and this occurs naturally in only about forty places on Earth.
But the right conditions can be created by constructing a tidal lagoon, an area of sea water separated from the sea.
One current plan is to create a tidal lagoon on the coast of Wales.
This will be an area of water within a bay at Swansea,
sheltered by a U-shaped breakwater, or dam, built out from the coast.
The breakwater will contain sixteen hydro turbines, and as the tide rises, water rushes through the breakwater,
activating the turbines, which turn a generator to produce electricity.
Then, for three hours as the tide goes out,
the water is held back within the breakwater, increasing the difference in water level,
until it's several metres higher within the lagoon than in the open sea.
Then, in order to release the stored water, gates in the breakwater are opened.
It pours powerfully out of the lagoon, driving the turbines in the breakwater in the opposite direction
and again generating thousands of megawatts of electricity.
As there are two high tides a day, this lagoon scheme would generate electricity four times a day, every day,
for a total of around 14 hours in every 24 -- and enough electricity for over 150,000 homes.
This system has quite a lot in its favour: unlike solar and wind energy it doesn't depend on the weather;
the turbines are operated without the need for fuel, so it doesn't create any greenhouse gas emissions;
and very little maintenance is needed.
It's estimated that electricity generated in this way will be relatively cheap,
and that manufacturing the components would create more than 2,000 jobs, a big boost to the local economy.
On the other hand, there are fears that lagoons might harm both fish and birds,
for example by disturbing migration patterns, and causing a build-up of silt, affecting local ecosystems.
There are other forms of tidal energy,
but I'll go on to the third category of marine energy: ocean thermal energy conversion.
This depends on there being a big difference in temperature between surface water and the water a couple of kilometres below the surface,
and this occurs in tropical coastal areas.
The idea is to bring cold water up to the surface using a submerged pipe.
The concept dates back to 1881, when...
我要提到的第二种海洋能源是潮汐能源。
利用潮汐能而不是波浪能的一个主要优势是，它的能源的源头可预测性较好：
我们知道接下来很多年的高潮和低潮的时间。
要让潮汐能有效，高潮和低潮的差值需要至少是五米，
而这只会在全球大概四十个地方自然发生。
但是通过建造潮汐泻湖，也就是区别于大海的一个海水区域能够创造合适的条件。
现在的一个计划是在威尔士的海岸建造潮汐泻湖。
这会建在斯旺西海湾的一块水域
，用在海岸建造的U形防波堤或者是大坝进行保护。
防波堤会有16个水轮机，当涨潮的时候，水就会冲向防波堤，
激活水轮机，而这会让发动机产生电力。
然后，在落潮的三个小时，
水会退回到防波堤中，这会增加水平面的差值，
直到泻湖里面的水位比海域的水位高很多米。
再然后，为了释放存储的水，防波堤的门会打开。
它会强有力地冲出泻湖，反方向驱动防波堤的水轮机，
然后再次产生几亿瓦特的电力。
因为每天有两次涨潮，泻湖体系每天能够四次发电，
这大概占据了每天24小时的14个小时--这能够为超过十五万家庭供给足够的电力。
这个系统有很多优势：不同于太阳和风力资源，它并不受气候所左右；
水轮机不需要燃料驱动，所以这并不会产生任何的温室气体排放；
而且不怎么需要维护。
据估计，通过这种方式产生的电力相对来说比较便宜，
生产部件能够创造超过两千个工作岗位，这会极大地促进当地的经济发展。
在另一方面，有很多人害怕泻湖可能会危害鱼类和鸟类，
比如说会扰乱迁徙路线，导致泥沙堆积，影响当地的生态系统。
有很多其他形式的潮汐能，
但是我会继续介绍第三种海洋能源：海洋热转换能源。
这主要依靠的是表面的海水和海面以下几千米水域海水的温度差，
这一般出现在热带海岸区域。
主要原理就是使用浸入管将冷水带到海面。
这个概念可以追溯到1881年，那时候...

2.阅读包答案：

一方面，湖中布满了各种各样的垃圾，漂浮在表面，有塑料容器、香蕉皮、鱼骨头以及食品包装袋等。另一方面，文字说明提示着这样一种现象，即旅游之后，垃圾遍地。

3.写作包答案：

Ancient people invented kites mainly to commemorate deceased relatives and friends. It is thought that flying a kite can convey love and affection to the dead. In the late Tang Dynasty, someone added strings to kites. When wind blew，those kites would sound like guzheng, thus earning the name of “fengzheng”. Weifang is called the “Home of Kites”. It has a long history of making kites，and kites made here are well-crafted, beautifully shaped, smooth when flying and easy to fly away. Every year，Weifang International Kite Festival is held during 20th-25th April，attracting lots of experts on kites，fans and visitors from home and abroad to view kites and compete with each other in flying kites.