单项选择题

The author specifically mentions that speech is ______.

A．often used when communicating by touch
B．necessary for satisfactory communication by gesture
C．the only highly developed system of communication
D．the most developed form of communication based on heating

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热门试题

单项选择题

From the information given we understand that students ______.

A．may only borrow books from their local library
B．must have special tickets to borrow books from another library
C．may lend their tickets to students in other libraries
D．may use their tickets to borrow books from other libraries

单项选择题

In order to help students further, a system exists, by which ______.

A．books on certain subjects can be borrowed from specialist libraries
B．each library agrees to specialist in one subject
C．a group of libraries agree to specialize in one subject
D．records are made of books on specialist subjects