问题 阅读理解

You can’t always predict a heavy rain or remember your umbrella. But designer Mikhail Belyaev doesn’t think that forgetting to check the weather forecast before heading out should result in you getting wet. That’s why he created Lampbrella, a lamp post with its own rain sensing umbrella.

The designer says he came up with the idea after watching people get wet on streets in Russia. “Once, I was driving on a central Saint Petersburg street and saw the street lamps lighting up people trying to hide from the rain. I thought it would be appropriate to have a canopy(伞蓬)built into a street lamp,” he said.

The Lampbrella is a standard-looking street lamp fitted with an umbrella canopy. It has a built-in electric motor which can open or close the umbrella on demand. Sensors(传感器)then ensure that the umbrella offers pedestrians (行人) shelter whenever it starts raining.

In addition to the rain sensor, there’s also a 360° motion sensor on the fiberglass street lamp which detects whether anyone is using the Lampbrella. After three minutes of not being used the canopy is closed.

According to the designer, the Lampbrella would move at a relatively low speed, so as not to cause harm to the pedestrians. Besides, it would be grounded to protect from possible lightning strike. Each Lampbrella would offer enough shelter for several people. Being installed at 2 meters off the ground, it would only be a danger for the tallest of pedestrians.

While there are no plans to take Lampbrella into production, Belyaev says he recently introduced his creation to one Moscow Department, and insists this creation could be installed on any street where a lot of people walk but there are no canopies to provide shelter.

小题1:For what purpose did Belyaev create the Lampbrella?

A.To predict a heavy rain.

B.To check the weather forecast.

C.To protect people from the rain.

D.To remind people to take an umbrella.小题2:What do we know from Belyaev’s worlds in Paragraph 2?

A.His creation was inspired by an experience.

B.It rains a lot in the city of Saint Petersburg.

C.Street lamps are protected by canopies.

D.He enjoyed taking walks in the rain.小题3:Which of the following show how the Lampbrella works?

A.motor→canopy→sensors

B.sensors→motor→canopy

C.motor→sensors→canopy

D.canopy→motor→sensors小题4:. What can be inferred from the last paragraph?

A.The designer will open a company to promote his product.

B.The Lampbrella could be put into immediate production.

C.The designer is confident that his creation is practical.

D.The Lampbrella would be put on show in Moscow.

答案

小题1:C

小题2:A

小题3:B

小题4:C

题目分析:在本文中作者介绍了一种的新发明。这种发明可以让你即使在下雨天没带雨衣或者雨伞的时候也不必害怕被淋湿。这是一种安装在路边电线杆上类似雨伞的装置,由传感器、电机和伞蓬三部分构成。发明人坚信这种装置可以给人们带来很大方便。

小题1:C细节理解题。从文章首段可知设计者发明这个装置的目的是避免没带雨具的人们淋雨。所以C选项正确。

小题2:A细节理解题。从文章第二段The designer says he came up with the idea after watching people get wet on streets in Russia可知他的灵感是由他的一次经历引发的,故A选项正确。

小题3:B推理判断题。由文章三、四段的叙述可知传感器先感知下雨,然后内置的电机打开,最后是伞蓬张开。由此可知B选项正确。

小题4:C推理判断题。从文章最后一段的叙述可知尽管没有计划把这种装置投入生产,但是设计者却仍然坚持应该在需要的街道上安装这种伞,由此推断他认为自己的发明很有实用价值。所以C选项正确。

问答题

如图是几种常见的实验装置:

(1)指出仪器名称:甲______乙______.

(2)如果用A装置加热固体制取氧气,请指出其中的错误:①______②______

(3)如果要收集干燥的氧气,通常可选用上述装置中的______(填写序号)

(4)实验室制取CO2应选择的发生装置是(填装置编号)______将药品装入试管之前必须要进行的实验操作是______如果小李准备收集一瓶CO2气体,所选用的收集装置是______(填编号)

(5)小李同学将制得的CO2通入澄清石灰水中,未见浑浊.

提出假设1:石灰水可能已变质.

措施:重新配制澄清的石灰水.取5g新买的氢氧化钙粉末放入干净的250mL烧杯中倒入约100mL蒸馏水,搅拌,静置,得到浑浊液.采用过滤的方法除去未溶解的氢氧化钙,除了滤纸,小李还需要哪些仪器?______

过滤后,如果所得液体仍然浑浊,小李应该怎样操作?______最后所得的澄清的液体是氢氧化钙的______(填饱和或不饱和)溶液.

(6)实验与问题:小李同学将制得的CO2通入新制的澄清石灰水中,仍然未见浑浊.

提出假设2:可能错用了较浓的盐酸,使制得的CO2中混入氯化氢气体.

(查资料知道:AgCl是一种白色的固体,它既不溶于水也不溶于稀硝酸)

设计实验方案:甲、乙两组同学选择图中的C或D装置与发生装置连接进行实验.

讨论与交流:

①甲组同学选择C装置,他们______(填“能”或“不能”)证实假设2,理由是______

②乙组同学选择D装置,他们______(填“能”或“不能”)证实假设2,理由是______.

多项选择题