星期天,小雨去逛商场,在她乘坐观光电梯的过程中,说法正确的是 A.电梯匀速上升时

题型:选择题

问题:

星期天,小雨去逛商场,在她乘坐观光电梯的过程中,说法正确的是

A.电梯匀速上升时,以地面上的树为参照物,小雨是静止的

B.电梯匀速下降时,以电梯为参照物,小雨是运动的

C.电梯匀速上升时,电梯对小雨的支持力大于她自身的重力

D.电梯匀速下降时,电梯对小雨的支持力等于她自身的重力

考点:比较快慢的方法
题型:选择题

阅读理解。

     Why does the Leading Tower of Piza (比萨斜塔) in Italy lean (倾斜)? It leans because of a mistake.

It has leaned almost since the day the tower was built.

     In 1174, the people of Piza, Italy wanted to build a bell tower. They wanted the tower to be the most

beautiful bell tower in all of Italy. The city also needed a bell tower because the church did not have one.

     As soon as the first floor of the building was finished, the tower started to lean. Builders tried to make

the building straight again as they added more floors, but the Leaning Tower only got worse as the tower

grew.

     It took almost 180 years to finish the tower. It is 54.5 metres tall, and it leans almost 4 metres to one

side. The tower is also sinking into the ground on which it was built. Every year, the tower leans another

1.5 centimetres.

     Like all old buildings, it is also falling apart. If someone cannot figure out (想出) a way to save the

tower, the Leaning Tower of Piza will fall down after 175 more years.

1. The Leaning Tower of Piza is in _____. [ ]

A. America

B. Canada

C. England

D. Italy

2. People built the Leaning Tower of Piza in _____.

[ ]

A. 1175

B. 1165

C. 1174

D. 1800

3. The Leaning Tower of Piza is _____ metres tall, and it leans almost _____ metres to one side. [ ]

A. 180; 54.5

B. 175; 4

C. 54.5; 4

D. 180; 4

4. People finished the Leaning Tower of Piza nearly in _____. [ ]

A. 1174

B. 1245

C. 1340

D. 1354

5. Which of the following is not true? [ ]

A. The Leaning Tower of Piza leans less than 0.5 centimetres every year.

B. The Leaning Tower of Piza is a bell tower.

C. It took almost 180 years to finish the Leaning Tower of Piza.

D. The Leaning Tower of Piza maybe falls down after 175 more years.

题型:选择题

电子计算机是一种能够根据()和要求,自动进行高速的数值运算和逻辑运算,同时具有存储、记忆功能的电子集成设备。()

A.程序指令

B.人的思维

C.算法

D.数据结构

题型:选择题

在扑灭电气火灾时应坚持()原则。

A、先断电,后灭火

B、先灭火,后断电

C、没有先后顺序

题型:选择题

ABC公司通常使用年数和计折旧法计算资产折旧。他们购买了一台价值$15,000的计算机,在第三年末该机可以$3,000的价格出售,则第三年所提的折旧为:()

A.$4,000

B.$2,000

C.$7,500

D.$2,500

题型:选择题

个人住房贷款一般采用分期还款方式。

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