单项选择题

A．When descending from a higher position.
B．When tailing to go after its food.
C．When propelling itself towards its food.
D．When being taken by tides and currents.
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单项选择题
A．Children were born with shyness.B．Children never blush when speaking.C．Children are very brave.D．Children like to speak in public.
A．Children were born with shyness.
B．Children never blush when speaking.
C．Children are very brave.
D．Children like to speak in public.
单项选择题
A．Trade unions in Britain are becoming more popular.B．Most strikes in Britain are against the British law.C．Unofficial strikes in Britain are easier to deal with now.D．Employer-worker relations in Britain have become more tense.
A．Trade unions in Britain are becoming more popular.
B．Most strikes in Britain are against the British law.
C．Unofficial strikes in Britain are easier to deal with now.
D．Employer-worker relations in Britain have become more tense.
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