and who call another tell or other for watch nation good it

"Mom，what's the time？" Then your mother has a look at the clock and （1） 　　you，"It's seven o'clock． It's time to get up． " We know the time by （2） 　　and clocks．

Switzerland can give the （3） 　　of them in the world． So it is（4） 　　"Watch Kingdom"． Now people in the country have a new type of clock﹣air clock．

You needn't wind up（上弦）（5） 　　put a battery in this kind of clock． It can keep on going （6） 　　600 years． The clock is in a transparent（透明的） plastic film． The film expands（膨胀） or contracts（收缩） according to the temperatures， and the clock goes on and on by（7） 　　．

The clock is very popular with many people（8） 　　like to live a simple life． Now， when the guests from （9） 　　countries come to Switzerland，the government takes the clock as a （10） 　　gift to them．