单项选择题

A．The difficulty of breeding electric fish.
B．The medical importance of electric fish.
C．How certain fish use electricity.
D．How fish navigate.
<上一题 目录 下一题>
热门 试题

单项选择题
A．She attended one of its meetings. B．Her roommate was one of its members. C．She saw its members protesting. D．She read about it in the newspaper.
A．She attended one of its meetings.
B．Her roommate was one of its members.
C．She saw its members protesting.
D．She read about it in the newspaper.
单项选择题
A．He gets ill at the same time every year. B．He doesn’t get enough exercise. C．He often has difficulty sleeping. D．He is always sick throughout the winter.
A．He gets ill at the same time every year.
B．He doesn’t get enough exercise.
C．He often has difficulty sleeping.
D．He is always sick throughout the winter.
相关试题