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A 3D-printed public toilet block, covering an area of 200 square meters, is drawing attention in Suzhou, east China’s Jiangsu Province.

Located in Sun Mountain National Forest Park, the green-and-wood-colored toilet block has been named “little box in forest”. It was made from construction garbage using 3D printing technology. The eco-friendly toilet block was built without any steel, but is even stronger than those built from concrete.

As part of China’s “toilet revolution”, the national drive to upgrade public toilets, Suzhou has been using advanced technology in its toilet facilities.

At some scenic sites, tourists can scan QR codes with their mobile phones to receive 80 centimeters of toilet paper. They can scan the codes multiple times for more paper, but have to pay if they scan too many times. The invention was intended to prevent toilet paper waste. Staff at the Humble Administration’s Garden tourist site said, the technology can help save nearly 9,000 yuan per toilet every year. It is estimated that the machines have helped reduce the use of toilet paper in the city’s public toilets by an average of 80 percent. More toilets will be equipped with the machines.

Suzhou is also using big data technology to improve the management of public toilet facilities. An online service platform has been launched for toilets in tourist areas, allowing users to quickly find the nearest toilet and be informed of the queue length. Users can also post comments about toilets on the platform.

1.What was the 3D-printed toilet made from?

A It was made from wood.

B It was made from steel.

C It was made from concrete.

D It was made from construction garbage.

解析：选D。细节理解题。根据第二段第二句It was made from construction garbage using 3D printing technology.可知这个3D打印厕所是由建筑垃圾做成的，故选D。

2.How much would you pay if you take 80 centimeters of toilet paper in such toilet?

A None.

B 0.2 yuan.

C 0.8 yuan.

D 1 yuan.

解析：选A。推理判断题。根据第四段第一、二句At some scenic sites, tourists can scan QR codes with their mobile phones to receive 80 centimeters of toilet paper. They can scan the codes multiple times for more paper, but have to pay if they scan too many times. 可知取纸很多次则会收费，第一次取纸是出纸80厘米，因此取纸80厘米是不会收费的，因此一分钱都不用付，故选A。

3.Why did people invent the toilet paper offering machine?

A To show tech development.

B To prevent toilet paper waste.

C To make money to build better toilets.

D To work out toilet paper consuming amount.

解析：选B。细节理解题。根据第四段第三句The invention was intended to prevent toilet paper waste.可知这项扫二维码取厕纸的发明是为了防止厕纸浪费，故选B。

4.What can we learn from the online toilet service platform?

A Through it we can find a toilet in scenic spots.

B Through it we can know how many people are waiting in line to use the toilet.

C Through it we can know how people feel after using the toilet.

D All of the above.

解析：选D。细节理解题。根据最后一段最后两句An online service platform has been launched for toilets in tourist areas, allowing users to quickly find the nearest toilet and be informed of the queue length. Users can also post comments about toilets on the platform.可知从这个在线厕所平台上可以查找景区的厕所的位置、排队等待如厕的队伍的长度以及人们对于这个厕所的评价，包含A、B、C三项，故选D。