单项选择题

Research into the material culture of a nation is of great importance because ______.

A．it helps produce new cultural tools and technol0g~,
B．it can reflect' the development of the nation
C．it helps understand the nation's past and present
D．it can demonstrate the nation's civilization
<上一题 目录 下一题>
热门 试题

单项选择题
According to the author how to correct the situation
A．Only some animals should be used for research.
B．Scientists and doctors should respect the views of the public.
C．The benefits of animal tests should be made widely known.
D．The debate on animal tests be put to s serious public poll.
单项选择题
In the first sentence of Paragraph 3, such misrepresentation refers to _______.
A．the idea that other methods can be substituted for animal research
B．the claim that animal experiment is intentionally cruel
C．the belief that all drugs developed with animal tests are dangerous
D．the fact that scientists and medical organizations support animal experimentation
相关试题