A:attached to
B:divided into
C:separated from
D:cut off
①体温不恒定
②在陆地上产卵
③用鳃呼吸
④体表覆盖有鳞片
Amy and Bob are in the s____class. They are b____in Class 1.
如图所示,用量角器度量∠AOB,可以读出∠AOB的度数为( )
⑴乘出租车____
⑵步行____
⑶骑自行车____
⑷乘火车____