一年内因醉酒后驾车被处罚()以上的,吊销机动车驾驶证,五年内不得驾驶营运机动车。
A.三次
B.四次
C.两次
参考答案:C
Joan saw her boyfriend off at the railway station. She waved until the train was _____.
A.in sight
B.out of sight
C.at first sight
D.lost sight
有效辐射是()之和。