梅兰日兰面板开关插座有哪些优点？

The Sydney Opera House is a very famous building in the world. It has become Sydney’s best-known landmark and international symbol. The Opera House with a “sailing roof” was designed by a famous Danish architect（丹麦建筑师）, Utzon. The base（基础）of the building was started in 1959, years before the designs were finished. Utzon spent four years deigning the Opera House. In 1962, the designs were finalized（定稿）and the construction began. In 1967, they started the decoration inside. It took 14 years in total to build the Opera House. Queen Elizabeth Ⅱ officially opened it on October 20^th, 1973.

The Sydney Opera House cost around $100 million and was paid for by the public. 6225 square metres of glass was used to build it. The Opera House includes 1000 rooms. It is 185 metres wide. The building’s roof sections weigh about 15 tons. Each year, this fantastic building attracts 200 000 tourists to come for a visit or enjoy events in it.

The Opera House reaches out into the harbour（港湾）. It is amazing and unforgettable, offering people a strong sense of beauty.

小题1:The designer of the Sydney Opera House was from _____________.

A．America

B．Australia

C．England

D．Denmark小题2: Building the Opera House lasted _____________.

A．from 1959 to 1973

B．from 1962 to 1973

C．from 1959 to 1967

D．from 1962 to 1967小题3:The underlined word “construction” means _______ in Chinese.

A．创立

B．设计

C．施工

D．竣工小题4:___________ paid for the cost of the building of the Sydney Opera House.

A．Utzon

B．The public

C．Queen Elizabeth Ⅱ

D．The government小题5:Which is the best title for the passage?

A．Sailing Roof

B．Travelling in Sydney

C．The Sydney Opera House

D．The Opening of the Opera House

如果19是x的倍数，那么x是[ ]

A．1    

B．19    

C．1或19

冲击地压防治领导岗位责任制规定（）为生产区队冲击地压防治的第一责任人。

因水密肋板可能会受单面水的压力，故其厚度比实肋板厚度增加（）mm，但一般不必大于（）mm。

A.2；10

B.4；10

C.2；15

D.4；15

设树T的度为 4，其中度为 1、2、3 和 4 的结点个数分别是 4、2、1 和 1，则T中叶子 结点的个数是【 】。