文档介绍：智课网TOEFL备考资料
托福阅读模拟试题及答案--Hormones in the Body
摘要： 对于一般准备参加托福考试的同学来说，最后一个月都会用做各种托福模拟题和真题的方法来准备托福考试。下面是小编为大家带来的一个新托福阅读模拟试题希望对大家能有所帮助，
对于一般准备参加 托福 考试的同学来说，最后一个月都会用做各种托福模拟题和真题的方法来准备 托福考试 。下面是小编为大家带来的一个 新托福 阅读模拟试题希望对大家能有所帮助，并最后附上参考答案。
Hormones in the Body
Up to the beginning of the twentieth century, the nervous system was thought to control all communication within the body and the resulting integration of behavior. Scientists had determined that nerves ran, essentially, on electrical impulses. These impulses were thought to be the engine for thought, emotion, movement, and internal processes such as digestion. However, experiments by William Bayliss and Ernest Starling on the chemical secretin, which is produced in the small intestine when food enters the stomach, eventually challenged that view. From the small intestine, secretin travels through the bloodstream to the pancreas. There, it stimulates the release of digestive chemicals. In this fashion, the intestinal cells that produce secretin ultimately regulate the production of different chemicals in a different organ, the pancreas.
Such a coordination of processes had been thought to require control by the nervous system; Bayliss and Starling showed that it could occur through chemicals alone. This discovery spurred Sta