变更车道时,应开启转向灯,迅速驶入侧方车道。
参考答案:错
My new novel has disappeared.Who _______ have taken it?
A.should
B.must
C.could
D.would
上颌窦恶性肿瘤的淋巴结转移发生较晚,常见的转移部位是()
A.颊淋巴结
B.颌下淋巴结及锁骨上淋巴结
C.颏下淋巴结
D.耳前淋巴结
E.锁骨上淋巴结