单项选择题

A．They began to lay eggs.
B．They changed their migration patterns.
C．Their flying ability improved greatly.
D．They become warm-blooded.
<上一题 目录 下一题>
热门 试题

单项选择题
A．Doing credit to one’s community.B．Distinguishing oneself.C．Getting rich quickly.D．Respecting individual rights.
A．Doing credit to one’s community.
B．Distinguishing oneself.
C．Getting rich quickly.
D．Respecting individual rights.
单项选择题
A．Help them with their studies.B．Pay them for participating in the study.C．Employ them as lab assistants.D．Teach classes at their high school.
A．Help them with their studies.
B．Pay them for participating in the study.
C．Employ them as lab assistants.
D．Teach classes at their high school.
相关试题