单项选择题

Mathematics ______ the study or science of numbers.

A．is
B．are
C．was
D．were
<上一题 目录 下一题>
热门 试题

单项选择题
______ ,this book will sell like not cakes.
A．Once printed
B．Printed
C．Having printed once
D．After to print
单项选择题
With the introduction of the electronic computer, there is no complicated problem ______ can be solved quickly.
A．that
B．which
C．but
D．as
相关试题