試題詳解

31.
(A) is
(B) be
(C) being
(D) been

**Passage 3: Questions 32-36**

Kristof Retezár, an industrial designer in Austria, invented a device that can extract humidity from the air and condense it into drinkable water. The handy gadget, dubbed Fontus, can be attached to a bike (32) that cyclists can generate water during long-distance rides through the countryside, where pit stops may be few and far between.

The Fontus device uses the principles of condensation to (33) humidity in the air into drinkable water. The solar-powered device (34) of a condensator (which functions like a cooler) that is connected to a series of hydrophobic surfaces that repel water. As the bike-mounted gadget takes in air, and these surfaces get cold, you're left with condensation. The prototype includes a filter at the top to keep dust and bugs out of the water, but currently it does not include a way to filter out potentially harmful (35)

Retezár is also working on a stand-alone version that uses an inverted ventilator to suck air into the system. This next-generation version could be used in regions of the world where humidity is high, but water is (36)