7．Which of the following is NOT the way Arabian babblers drive off predators?

　　A．One bird makes an alarm call and other birds will join it.

　　B．They fight the enemy bravely face to face.

　　C．They make noises and flaps around the predator.

　　D．They force the predator aware that it isn't worthwhile to attack.

　　答案：B　细节理解题。根据文章倒数第三段中Arabian babbler赶走predator的过程可知，B项不是Arabian babbler赶走掠夺者的方法。故B项正确。

　　8．What is the main idea of the passage?

　　A．Animals' behaviors are researched to be applied to the study of military robots.

　　B．Robots' fooling tricks are applied to the study of animals' behaviors.

　　C．Birds and squirrels are the animals that are good at deception.

　　D．Researchers are interested in animals' military­related behaviors.

　　答案：A　主旨大意题。通读全文可知，本文主要讲述了松鼠和Arabian babbler在生存中如何利用骗术击退敌人保护自己的过程，研究人员希望机器人也能模仿这些行为，从而有效地运用于军事战略当中。故A项正确。

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