单项选择题

Biological warfare originated in the 20th century.

A．Right
B．Wrong　
C．Not mentioned
<上一题 目录 下一题>
热门 试题

单项选择题
About half of the people in the world suffered from the Spanish Flu.
A．Right　
B．Wrong
C．Not mentioned
单项选择题
The Spanish Flu was named after the place where it started.
A．Right
B．Wrong
C．Not mentioned
相关试题