内容正文:
阅读理解—社会生活类
(限时15分钟,每小题2分,满分24分)
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2.What is to be studied in the building process?
No one in the US has 3D-printed a two-story house
A.How 3D-printed houses are made stronger.
before.But now three companies are working together to
B.How the printed houses stand wear and tear.
print the first large,two-story house in the US.
C.How workers can print large houses quicker.
The house,which is in Houston,Texas,was
D.How conerete changes with the shift of weather.
designed by a company.Another company provided the
3.What is a disadvantage of the 3D-printed house at
3D printer.And a construction company is doing the
present?
actual building.Leslie Lok,who designed the house,
A.Its cost is higher.
said there are special challenges involved in printing the
B.It uses special concrete.
two-story house.One of the biggest is the size of the
C.It can't survive the storm.
machine needed for the building.The 3D printer in
D.It needs experienced workers.
Houston is massive.It weighs over 12 tons.
4.How does Hikmat Zerbe feel about the future of 3D-
Leslie Lok says printing the house will take the
printing?
massive machine about 330 hours.That's about eight
A.Negative.
B.Unclear.
normal work weeks.But the team isn't in a rush.
C.Worried.
D.Hopeful.
Though it's a two-year project,the actual printing didn't
B
start until last July.The house is now about halfway
This fall,students at the University of Massachusetts
finished.
found a new menu at their dining commons:the "diet
“We are not trying to beat the clock,”says
for a cooler planet"menu.This meant herb-roasted
Hikmat Zerbe,who works for the construction lamb,raised with a carbon-friendly approach.It
company.Instead,they're using the house as a "big included sweet potatoes that had been picked from a
laboratory"to learn more about 3D-printing houses.local farm's field post-harvest.The options were plant-
They want to see how the concrete reacts "under heavy,locally grown,and involved little or no packaging.
different weather conditi