单项选择题

According to the context, "bicycles for amateurs" at the beginning of the second paragraph refers to bicycles ______.

A．that people buy only for riding in their daily life
B．that are bought by amateur cyclists who like cycling as an exercise
C．that are built for customers in general
D．that non-Olympic competitors use
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单项选择题
The new bicycle exhibited at the National British Cycling Championships was radical because ______.
A．it was made from the gold medal-winning design of the Barcelona Olympics
B．it was the first commercial mountain bike
C．its public showing last weekend aroused many people's curiosity
D．it was made of one single piece of carbon fibre
单项选择题
Which of the following statements in Not true
A．The new commercial bike has no crossbar and its centre of gravity is lower than the Olympic model.
B．When the rider is doing some rough riding, the new bike's low cetnre of gravity gives him better control.
C．The new bike is made by using aerospace technology and is quicker than the conventional bike by 3 seconds per kilometer.
D．The new bike has no metal bar between the saddle and the back wheel, and the amount of carbon fibre in the back wheel can be changed according to the user's tast
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