题目内容
Many man-made substances are replacing certain natural materials because either the quantity of the natural product can not meet our ever-increasing requirement, or, more often, because the physical properties of the synthetic substance, which is the common name for man-made materials, have been chosen, and even emphasized, so that it would be of the greatest use in the field in which it is to be applied.
查看答案
搜索结果不匹配？点我反馈
更多问题
[听力原文] 11-15A university professor recently made several tests with different animals to find out which was the cleverest. He found out that the monkey was cleverer than other animals.In one test the professor put a monkey in a room where there were several small boxes. Some boxes were inside other boxes. Inside one small box was some food. The professor wanted to watch the monkey and find out how long it would take the monkey to find the food. The professor left the room. He waited a few minutes outside the door. Then he got down on his knees and put his eye to the keyhole. What did he see To his surprise, he found himself looking into the eye of the monkey. The monkey was on the other side of the door and looked at the professor: through the keyhole. What was the result of the test The result is that the monkey（）
[听力原文] 11-15A university professor recently made several tests with different animals to find out which was the cleverest. He found out that the monkey was cleverer than other animals.In one test the professor put a monkey in a room where there were several small boxes. Some boxes were inside other boxes. Inside one small box was some food. The professor wanted to watch the monkey and find out how long it would take the monkey to find the food. The professor left the room. He waited a few minutes outside the door. Then he got down on his knees and put his eye to the keyhole. What did he see To his surprise, he found himself looking into the eye of the monkey. The monkey was on the other side of the door and looked at the professor: through the keyhole. What surprised the professor He was surprised to find himself（）into the monkey’s eye.
In the United States, teaching is very important. If teachers do not teach well, students complain. If many students do not understand, people think that the teacher does not do a good job. The teacher has big responsibilities to make sure students understand. In a sense, students are consumers and the teacher is offering services.Students have the right to evaluate their teachers, and they usually do so at the end of each course. That evaluation includes lots of aspects of teaching, such as explanation, preparation, using good examples, answering questions, and organization of classes.Students are supposed to read required textbooks and recommended books before class. Without reading them, they will find it very difficult to understand the class. Basic courses on doing research and writing papers are taught at the beginning of the program. They teach things very concretely (具体的) and clearly. Students are expected to apply what they have learned to their studies.Classes are usually divided into lectures and seminars (研究讨论会). There are some lecture classes, where the teacher just gives a lecture, and students ask questions at the end. Most graduate level classes are lectures and discussions. Participating in discussions is very important. Higher level classes involve very little lecturing. They emphasize discussion and presentation by the students. When a program starts, students should first（）
The first part of the 20th century (see)（）more great inventions.
微信支付 
支付宝支付