Flies evolve to be smarter only in the labs fundamentally because______.
A. flies can adapt to the environment without learning
B. the cost of learning in the wild is too huge to bear
C. they may get some diseases as a byproduct in nature
D. the lab conditions allow them to learn better
查看答案
By mentioning microbe, the author intends to______.
A. advocate that animals with a nervous system can all learn
B. argue that learning is an adaptation to a changing environment
C. claim that learning has some kind of side effects
D. prove that the adaptation may not include learning with a nervous system
Some species are better learner than others partly because______.
A. some animals prefer to remain dumb
B. some animals don"t have a nervous system
C. learning may endanger some animals" health
D. they are better taught than others
荀子强调的“修身” ，包括 () 和() 两个方面。
气瓶检验单位应该按照有关安全技术规范和检验标准规定进行定期检验，检验项目()增减。
A. 可以
B. 不可以
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