单项选择题

In the following places, where can we not find the LEDs

A．Digital clock.
B．Traffic lights.
C．Swimming pools.
D．Cassette players' speakers.
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单项选择题
Everything is decided in a family ______.
A．by the couple
B．with the help of their parents
C．by brothers and sisters
D．with the help of aunts and uncles
单项选择题
What does the author mean by Family is of course an elastic word
A．Different families have different ways of life.
B．Different definitions could be given to the word.
C．Different nations have different ways of life.
D．Different times produce different families.
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