单项选择题

According to the passage, when did modern bicycles first appear

A．Twenty years before 1876.
B．Around 1887.
C．About 1876.
D．In the late eighteenth century.
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单项选择题
Pets are important in our lives because they ______.
A．provide us with food
B．are domestic animals
C．can be our good friends
D．can be very attractive
单项选择题
Which of the following gives a best summary of the article
A．All kinds of animals are playing an important role in our lives.
B．Without domestic animals, we need to spend a lot of time in hunting.
C．All animals are important because they provide us with food.
D．All animals can be both fun and instructive to children.
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