单项选择题

What does your brain do while you are sleeping

A．It improves problem-solving skills and creative thinking.
B．It helps you do your best in school.
C．It helps your brain sort out information from your day.
D．It has a good rest.

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热门试题

单项选择题

Why is it advised to buy a baby dog under three months old

A．Because it's easier to buy a baby dog under three months.
B．Because they are less likely to be shy with human being.
C．Because they are less likely to run away.
D．Because it's easier for them to form a relationship with their masters.

单项选择题

Why does the writer say a dog is a more demanding pet than a cat

A．Because it must be trained so that it won't bite.
B．Because it demands more food and space.
C．Because it needs more love and care.
D．Because it must be looked after carefully.