15．Many of the earth’s plants and animals have already ______ and several other species are endangered．

　　　 A．died away　　 　 B．died out　　 　　　 C．died down　　 　　 D．died of

14．We should always keep in mind that accidents _______ from carelessness while driving．

　　　 A．arise　　　　 　　 B．arouse　　　 　　　 C．begin　　　 　　　 D．rise

13．The graduates ______ into the company usually receive strict training before they start to work．

　　　 A．accepted　　　 　 B．admitted　　 　　　 C．entered　　　 　 D．received

12．It was already past midnight and only three young men _____ in the tea house．

　　　 A．left　　　　　 　 B．remained　　 　　 C．delayed　　　　 　　　　　　　　　　　　 D．deserted

11．Yesterday morning in a city in the USA, a crowd of dustmen went on a strike to ______ complaints about their low pay．

　　　 A．sound　　　　 　 B．voice　　　　 　　 C．noise　　　　　 　　　　　　　　　　　　 D．talk

10．Whenever it is, it is right for a student to ______ the school disciplines．

　　　 A．see　　　　　 　 B．watch　　　 　　 C．notice　　　　　　 　　　　　　　　　　 D．observe

9．----- What do you think of the performance we saw last night, Jenny?

----- ______ I want to see it a second time．

　　　 A．That couldn’t be worse!　　　 　　　　　 B．It could be better

　　　 C．That couldn’t be better!　　　 　　　　　 C．It was just so-so．

8．He tried to cope with the ever-increasing burden of his work, but finally he _____ and had to take a complete rest．

　　　 A．broke in　　　　 　　　　　　　　　　　　　　　　 B．broke down　　　 　　　　　　　　　　 C．broke out　　 　　　 D．broke up

7．The police tried to get some clues from the suspect, but he remained ______．

　　　 A．silent　　 　　　　　 B．quiet 　　　　　　　　　 C．calm　 　　　　　　　 D．still

6．The engine of the ship was out of order and the bad weather _____ the helplessness of the crew at sea．

　　　 A．turned out　 　　　　 B．resulted from　 　　 C．added to　 　　　　 D．made up