The bat is a marvel of evolutionary
adaptation. Most of them roost during the day, and are active at night or
twilight for they can avoid objects in the dark. I have seen this phenomenon at
work. In my youth, I used to explore old mining shafts in the Randsburg
district. Sometimes my intrusion disturbed clans of bats that were hanging
upside down in the dark caves. They would fly about to evident panic, but the panic was mine, not theirs. Some flew crazily out into the daylight but some merely returned to their perches. None ever touched me, much to my relief. They may exist but I have never seen a stuffed nylon bat. To children, bats may not be as lovable as koala bears. Perhaps manufacturers do not regard them as marketable. It is not so much their hideous faces and winged bodies that have caused us to get rid of bats, bu A. In great panic, the bats were driven out of the cave. B. I was greatly scared by the unexpected view of the hideous flying mammals. C. The bats were too tiny to cause panic. D. The bats moved reluctantly from where they stayed. [单项选择]bat
A. WPS B. Foxbase C. Kill D. Frontpage E. Winzip [单项选择]
HISTORY OF LANGUAGE 1 In evolutionary history, the development of language set humans apart from the rest of the animal kingdom. Spoken language originated when early humans began to string grunts and squeals together to form a sound-meaning system. Language provided humans with the tools to create ideas and then to communicate these ideas to other people. 2 As human knowledge and civilization expanded, a system that stored information became necessary. The first writing systems used pictures to represent objects. These early systems were successful in recording concrete details concerning trade and taxes, but they could not convey abstract ideas and emotions. Between 800 and 500 B.C., the ancient Greeks began to use a phonetic alphabet that used symbols to represent sounds, with each sound making up part of a word. Thus, written language became a means of mass communication. 3 The expansion of humanity from an or A. Humans evolved as the most powerful species after they developed language. B. The creation of human language has its origins in the language of animals. C. The emergence of language distinguished early humans from other animals. D. Humans and animals developed completely different systems of communication. 我来回答: 提交
|