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：

Well, in 1908, Kikunae Ikeda identified a fifth 'taste'.

And it is thought that MSG intensifies this naturally occurring 'taste' in some food.
It does make perfect evolutionary sense that we should have the ability to detect or taste glutamate because it is the amino acid which is most common in natural foods.
John Prescott, an associate professor at the University of Chicago, suggests that this fifth taste serves a purpose just as the other tastes do.
He suggests that it signals to us the presence of protein in food, in the same way that sweetness indicates that a food contains energy-giveing carbohydrates.
Bitterness, he says, alerts us to toxins in the food, while sourness warns us of spoilage and saltiness signals the presence of minerals.
So, what else do we know about this fifth taste...
在1908年，池田菊苗发现了第五种味道。
味精很自然地加强了一些事物的味道。
因为谷氨酸盐是在自然食物中很常见的氨基酸，所以我们能够发现并尝出它的味道，从进化的角度看，这是说得通的。
芝加哥大学副教授，约翰·普雷斯科特认为这第五种味道和其他的味道作用相同。
他认为这表示食物中蛋白质的存在，就像甜味表示食物中包含补充能量的碳水化合物。
他说，苦味提醒我们食物有毒，酸味警告我们食物变质，而咸味表示矿物质的存在。
那么，对于第五种味道，我们还知道什么……

2.阅读包答案：

古特曼人令人信服地论辨道，黑人家庭的稳定有助于包括民间传说、音乐、及宗教表达在内的黑人文化遗产一代一代传递下去，因而在维持文化遗产方面也起着至关重要的作用，而对于这种文化遗产，黑奴们不断地从其非洲和美洲的经历中予以丰富发展。

3.写作包答案：

Chinese currency has a long history and a vastvariety, which forms a unique monetary culture. The earliest currency of China was seashell, whichprobably appeared in the Xia Dynasty. During theSpring and Autumn Period, diverse currencies wereused owing to the differences in social conditions and cultures in different regions. Theestablishment of Qin Dynasty unified the chaotic Chinese monetary system and peoplebegan to use copper coins. In the Northern Song Dynasty, Jiaozi, the world's first papercurrency, appeared Silver became the legal currency in circulation in the Ming and QingDynasties, while copper coins were often used in small transactions. The changing form ofcurrency showed the development of Chinese business, which was an important part of Chineseancient civilization.