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
During the ten thousand miles journey across the desert, several men dropped with ______.
A．fatigue
B．concession
C．grease
D．wreck
相关试题