”．

　　A．suggested

　　B．realized

　　C．predicted

　　D．noticed

　　答案　A

　　解析　词义猜测题。根据画线词后的“the bones came from one adult dinosaur and two young dinosaurs”和接下来的内容可知，进一步的研究表明这些骨骼来自一种新的恐龙物种。reveal这里表示“表明，揭示”，故选A。

　　3．Why were the dinosaurs found dead in the cave?

　　A．They fought against each other and were hurt and died there.

　　B．A flood of sand suddenly appeared，killing the dinosaurs living inside.

　　C．They were killed by a flesh­eating animal and dragged into the cave.

　　D．They were killed by a flesh­eating animal and their skeletons were buried there.

　　答案　B

　　解析　细节理解题。由第四段中的“a flood of sand suddenly filled the cave，trapping and killing the dinosaurs living inside”可知选B。

　　4．What do the new fossils prove?

　　A．All the dinosaurs took care of their young.

　　B．Dinosaurs just wandered around the Earth’s surface.

　　C．Dinosaurs could have supported themselves while digging.

　　D．Some dinosaurs dug caves and lived in them.

　　答案　D

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