既是消化腺又是内分泌腺的腺体是( )
A:肝脏
B:胰腺
C:垂体
D:肾上腺
如图是人耳的结构示意图,有关描述不正确的是( )
人地关系全面呈现不协调,人地矛盾迅速激化的时期是( )
根据图画提示完成对话
Mike is a very cool boy. He very likes Chinese food. He likes ____, but he can't use ____. Mike's friend Wu Yifan lies ____. He can use ____ and ____now. Their teachers Miss White is beautiful . She likes ____and ____. She can use ____.