Advanced mammals such as monkeys,apes and human(the primates)have brains derived from ancestors that took to living in the trees,where vision mattered more than smell.Accordingly the once-bigsmellpart of the forebrain grew smaller,while the part that handles vision grew much larger.(244words)
1.With what topic is the passage mainly concerned?
A)The sensory organs of invertebrates.
B)The anatomy of tiny organisms.
C)The origion of the brain and central nervous system.
D)The importance of vision for fish and advanced animals.
2.The hydra is a kind of .
A)flatworm B)coelenterate
C)sea anemone D)nerve cell
3.It can be inferred from the passage that insects do not have .
A)brains B)backbones C)nerve cells D)reflexes
4.According to the passage,what helps to coordinate the complex physical activity of a mammal?
A)The cerebellum.B)The forebrain.
C)The cerebrum.D)The midbrain.
5.In the last paragraph,the phrasetook tocould best be replaced by which of the following?
A)began B)fled to
C)carried to D)became friendly toward
6.What does the following paragraph most likely discuss?
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