[单项选择]As ordinary people, scientists are by no means more honest or _______ than other people, but as scientist, they attach special value to honest while they are in their working sphere.
A. ethical
B. ethnic
C. aesthetic
D. esthetic

[单项选择]As ordinary people, scientists are by no means more honest or （） than other people, but as scientist, they attach special value to honest while they are in their working sphere.
A. ethical
B. ethnic
C. aesthetic
D. esthetic

[单项选择]Ordinary people are now lacking of the scientific knowledge about nutrition.（）
A. short with
B. are absent of
C. lack in
D. are deficient on

[单项选择]According to scientists, people sneeze because ______.


A. they are ill
B. to sneeze is human nature
C. they do not need any conscious help
D. there are unwanted things in their noses

[单项选择]In the eyes of many ordinary people , scholars are by ______very unpractical.

[单项选择]What is the concern of ordinary people about the greenhouse effect


A. Whether it can be detected and checked.
B. Whether it will lead to widespread food shortage.
C. Whether global warming will speed up in the future.
D. Whether it will affect their own lives.

[单项选择]Scientists discovered that people's emotions are ______


A. controlled by their facial expression
B. influenced by their facial expression
C. identical with their facial expression
D. contrary to their facial expression

[单项选择]

Scientists believe that people "dressed up" long before they made a habit of wearing clothes. Primitive man dressed himself in feathers and ornaments, or painted his body and wrapped himself in animal skins. It was probably some time before man discovered that the decorations kept him warm and protected him from-various injuries. Even today, millions of people who wear little clothing use ornaments and decorations.
When primitive people began to wear clothing regularly, they had to make it from the materials at hand, In cold regions, they often used the skins of fur-bearing animals as protection against the cold. In warmer regions of the world, the people dressed themselves in clothing made from leaves, tree bark and woven grasses. Some people scraped the hair from animal skins to make soft leather for their clothes.
Linen was the first woven material from which clothes were made. From very early times, men have known how to make flax into fine linen. In
A. animal skins
B. leaves
C. woven grasses
D. flax