5．According to paragraph 2, the research vehicle ________.

　　A．is used only to measure water currents

　　B．is designed by the engineer called Lavinia

　　C．can also create a three­dimensional map

　　D．can detect the zooplankton and sea life

　　答案：D　细节理解题。根据第二段第六、七句话“He says the vehicle has equipment that can detect small organisms called zooplankton and fish. He adds that other sensing devices measure water currents and other features of sea life.”可知，选D。

　　6．Which of the following is TRUE?

　　A．Both of the vehicles are powered by batteries.

　　B．Neither of the vehicles can stay for months.

　　C．The vehicles help reduce both time and money.

　　D．Reports are sent by the scientists themselves.

　　答案：C　推理判断题。根据第四段第一、二两句话“Using these robotic ocean vehicles greatly reduces the cost of exploring the seas with manned laboratories. Scientists can spend more time analyzing the collected information.”可知，选C。

　　7．What is the purpose of the passage?

　　A．To call on us to protect the sea.

　　B．To introduce two water robots.

　　C．To inform us of sea exploration.

　　D．To arouse our interest in sea life.

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