___ himself ___ , he had to shout at the top of his voice.
A.Made.. heard
B.Making.. to hear
C.Made.. hear
D.To make.. heard
答案:D
___ himself ___ , he had to shout at the top of his voice.
A.Made.. heard
B.Making.. to hear
C.Made.. hear
D.To make.. heard
答案:D
用线段连接下列动物的表现与所属的行为
①金龟子遇敌假死 | A.繁殖行为 |
②雌鸟衔虫喂养雏鸟 | B.防御行为 |
③天鹅的按时迁徙 | C.社群行为 |
④饿狗为食物而争斗 | D.攻击行为 |
⑤蚂蚁间的分工合作 | E.节律行为 |