单项选择题

The characteristic of the Neanderthal teeth

A．may result from their frequent use of teeth equipment
B．is that all their teeth are strongly rooted
C．can not be reflected in their cultural activities
D．has something to do with their eyes

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热门试题

单项选择题

The Neanderthals have larger housing brains than modern human beings because__________

A．their intelligence is more advanced
B．they are much shorter
C．their bodies are larger
D．they are larger and cleverer

单项选择题

When plastics were invented a hundred and twenty years ago, _____________.

A．people found they were cold materials
B．their shapes were set permanent
C．people accepted them at once
D．they did not enjoy immediate popularity