A、The well. B、The wheels. C、The ears. D、His ears. B细节推理题。司机在检查了什么后，又可以安心上路了呢?到底是井、轮子、还是耳朵呢?自然应该是轮子了。

Hidden passengers traveling in ships, trains, or even cars can be a terrible nuisance--especially when they are insects. In this respect, there is a great difference between human beings and insects. The former make every possible effort to avoid discovery, while the latter quickly draw attention to themselves.
    We can only sympathize with the unfortunate man who had to stop his car soon after setting out from a country village to drive to London. Hearing a strange noise from the back of the car, he naturally got but to have a look. He examined the wheels carefully but as he found nothing wrong, he continued his way. The noise began almost immediately and now it was louder than ever. Quickly turning his head, the man saw what appeared to be a great black cloud following the car. When he stopped at a village further on, he was told that a queen bee must be hidden in his car as there were thousands of bees nearby.
    On learning this, the man realized that the only way to escape would be to drive away as quickly as possible. After an hour’s hard driving, he arrived in London where he parked his car outside a hotel and went in to have a drink. It was not long before a customer who had seen him arrived and hurried in to inform him that his car was covered with bees. The poor motorist telephoned the police and explained what had happened. The police decided that the best way to deal with the situation would be to call a bee-keeper. In a short time, the bee-keeper arrived. He found the unwelcome passenger hidden near the wheels at the back of the ear. Very grateful to the motorist for his unexpected gift, the keeper took the queen and her thousands of followers home in a large box. Equally grateful, the motorist drove away in peace, at last free from the "black cloud" which had hung over his car.