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TCEx1Solutions - Some solutions for TC Exercise 1 Note that...

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Some “solutions” for TC Exercise 1 Note that these are only some of the many possibilities, and also note that determining which is the ‘best’ sentence has to do with the order and overall emphasis you choose. 1. The bicycle is a vehicle powered by a force that its rider applies. The bicycle gets its power from the force its rider applies. Bicycles are human-powered vehicles; thus the environment benefits when people use them as alternatives to fossil-fuel-burning vehicles (this one would be combined with Sentence 5).. As human-powered vehicles, bicycles are an environmentally beneficial alternative to fossil-fuel powered vehicles (also combined with Sentence 5). People can benefit the environment by using bicycles rather than driving fossil- fuel-burning vehicles, because these useful devices are human-powered (another combination with Sentence 5). The bicycle is a human-powered vehicle; the force that its rider applies by pushing down on the pedals…(this one would be combined with Sentence 2). In any case, note that the unnecessary noun clause at the beginning is gone in all of the revisions and that the successive relative clauses (both with passive verb phrases) now appear in shorter and more compact or direct form. 2. When the rider pushes down on the pedals, this action imparts rotary motion to a geared component called the front sprocket (see Figure 27-1). This sprocket is connected by a chain to a similar component (rear sprocket) mounted on the back wheel (see Figure 27-1).
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