D．the coach arrived to send them to see the sharks

　　【解析】　细节理解题。可从第二段“...I met with my friends for breakfast，with little conversation.I supposed we were nervous about the day ahead of us.”看出早饭时间大家几乎没有心情交谈，是由于紧张即将发生的事情，因此答案为C。

　　【答案】　C

　　8．On seeing the sharks，the author and his or her friends________.

　　A．prepared themselves at once before getting into the water

　　B．got known about the sharks from the guide's introduction

　　C．jumped into the sea under the instruction of the coach

　　D．got into the water with the protection of a cage

　　【解析】　细节理解题。可从第三段“Without any formal preparation or instruction，we put our thick wet suits on and jumped into the iron cage.”可以看出作者和朋友们并没有经过任何正式的准备或指导，而是直接下水的，因此答案为D。

　　【答案】　D

　　9．According to the fifth paragraph，the sharks under the water seemed________.

　　A．aggressive

　　B．chaotic

　　C．quiet

　　D．frightening

　　【解析】　细节理解题。可从第五段“And the sharks that always appeared frightening on TV or in photographs actually appeared peaceful in person.”可知在作者看来，鲨鱼在水下是相对安静的，因此答案为C。

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