下面的短文后列出了7个句子，请根据短文的内容对每个句子做出判断：如果该句提的是正确信息，请选择A：如果该句提的是错误信息，请选择B：如果该句的信息文中没有提及，请选择C。 Plants and Mankind
Botany, the study of plants, occupies a peculiar position in the history
of human knowledge. We don’t know what our Stone Age ancestors (祖先) knew about
plants, but from what we can observe of preindustrial societies that still
exist, a detailed learning of plants and their properties must be extremely
ancient. They have always been enormously (巨大地) important to the welfare of
people, not only for food, but also for clothing, weapons, tools, dyes,
Medicines, shelter, and many other purposes. Tribes living today in the jungle
of the Amazon (亚马逊河) recognize hundreds of plants and know many properties of
each. To them botany has no name and is probably not even recognized as a
special branch of "knowledge" at all. Unfortunately, the more
industrialized we become the farther away we move from direct contact with
plants. And the less distinct our knowledge of botany grows. Yet everyone comes
unconsciously on an amazing amount of botanical knowledge, and few people will
fail to recognize a rose, an apple, or an orchid (淡紫色的). When our Neolithic
(新石器时代) ancestors, living in the Middle East about 10,000 years ago, discovered
that certain grasses could be harvested and their seeds planted for richer
yields the next season, the first great step in a new association of plants and
humans was taken. Grains were discovered and from them flowed the marvel of
agriculture: cultivated crops. From then on, humans would increasingly
take their living from the controlled production of a few plants, rather than
getting a little here and a little there from many varieties that grew wild and
the accumulated knowledge of tens of thousands of years of experience and
intimacy with plants in the wild would begin to fade away. It is logical that a detailed learning of plants and their properties must be extremely ancient.