深圳皇岗区的一加工企业与国外某公司签订一份来料加工合同，由外方提供价值60万美元的原

Sydney is a young city. Its history goes back just over 200 years. But in Australia, it is the oldest city. It is also the country' s largest city. Sydney is the capital of New South Wales and the most popular city of Australia.

The climate of Sydney is very good. It' s not too cold during the winter and not too hot during the summer. The sky is blue, the air is fresh, and birds sing in the garden. People who live in Sydney seem to have an easy life style. They will tell you, "Don't worry. "

Many people think that Sydney is one of the most attractive cities in the world. It has many tall and modern buildings. Among them, Center point Tower is the tallest. Standing on the 305-metre(80 storeys)tower, you will have a great view of the city.

Sydney is famous for its deep harbor(港口). The harbor has many bays(湾) and beautiful surf beaches.  Among them, Bondi beach is the most popular.  Sydney Harbor is not only beautiful, it also serves as a large port. Ships carry wool, wheat and meat from Sydney to other countries.

People living in Sydney like to call themselves Sydneysiders. They are mostly friendly and easygoing. When they are not working, they love to have a good time at the beach, swimming and sailing.

小题1:Sydney is the        city in Australia.

A．youngest

B．largest

C．coldest

D．hottest小题2: It seems that people in Sydney have easy life because         .

A．the climate is very good

B．the sea is very beautiful

C．they are very rich

D．they always tell you, "Don't worry. "小题3:What is true about the Center point?

A．It' s the tallest building in the world.

B．It's an old building.

C．You can see most of the city on it.

D．It' s 80-metre tall.小题4: Australia is rich in        .

A．wool

B．wheat

C．meat

D．all the above小题5:What do you think of people in Sydney?

A．cool

B．busy

C．shy

D．warm-hearted

在面向对象的程序设计中，类描述的是具有相似性质的一组 【3】 。

一次风挡板具备哪些条件时关？

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