45. Many people think Steve stole the money.
A. It was not Steve who stole the money.
B. Steve is thought to have stolen the money.
C. Many people think the money is stolen by Steve.
D. The money is thought to be stolen by Steve.
Read the passage below carefully and choose the correct answer A, B, C, or D:
In the future, maybe all cars that run on petrol will be replaced by solar cars, which have
been around for a while, but with recent developments in solar car design and the
measurement of photovoltaic cells becoming smaller, the dream of a truly efficient solar car
is more reality than fantasy. A solar car is a vehicle powered by photovoltaic cells, also
called solar cells, which convert sunlight (light energy) into electrical energy. As a source of
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energy on earth, there is nothing like the sun: in a mere one thousandth of one second
(.001), the sun emits enough energy to fulfill our planet's energy needs for the next 5,000
years. It is a staggering fact, and an exciting one. Since the energy from the sun is
responsible for renewable resources such as wind, tides, and heat, solar energy seems to
offer the brightest future for not only cars, but for the entire energy crisis. Despite the
appearance that solar energy may be the least feasible among the current crop of
alternative fuel propositions, new solar powered devices and more specifically solar
powered cars are beginning to be developed. How do Solar. Cars work?
The photo-voltaic cells absorb photons from sunlight. This action generates heat, which the
cells then convert into electrical energy and stores in an on-board battery. This process of
conversion is called the photovoltaic effect. Not surprisingly, such a vehicle has zero
emissions, and is very environmentally friendly. Unfortunately, at the moment photovoltaic
cells are extremely inefficient, yet as time progresses the efficiency of these cells will grow.
This will make solar energy and solar cars the fuel and car of the future-a closer reality.
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