Excited archaeologists discovered the Loch Ness­style creature on the beach and have spent months piecing together dozens of old bones to reveal the 12ft­long plesiosaur.

　　 The marine reptile hunted the oceans with a long thin neck and tail four large flippers and razor­sharp teeth. It existed during the Jurassic Period about 150 to 200 million years ago when what is now the Channel was a shallow tropical sea.

　　 The remains were discovered by the fossil hunter Tracey Marler under rocks on Monmouth Beach near Lyme Regis Dorset.

　　 As experts examined the bones in detail they were surprised to see teeth marks from where a predator dinosaur could have feasted on the carcass of the "lake monster". After further excavation about 150 vertebrae bones and parts of its skull and jaw with one tooth remaining were uncovered.

　　 Mr Moore said. "It came out in pieces but you could clearly see how it looked. The tail bone was in position and some of the back bones were completely in place where they should be and the neck bone was there as well. There are teeth marks and you can see how the skeleton had been torn apart by some other nasty marine reptile."

　　 The alternative of leaving it could have led to it being destroyed by ill­informed collectors or eventually being washed away and eroded by the sea.

　　 Richard Edmonds science manager for the Jurassic Coast World Heritage Site said. "There was a risk that we could have damaged the pavement by the act of removing the fossil. Plesiosaur remains are rare. There are only 10 known examples of complete or even partial skeletons of this species. I have been doing this for 30­odd years and I have only ever found the old bone. It is hoped the skeleton which is 70 percent complete will go on public display at the Lyme Regis Museum."

　　5．What has been discovered according to the passage?

　　A. The remains of a plesiosaur the Loch Ness­style creature.

　　B. A lake monster living about 00 billion years ago.

　　C. The body of a huge fish.

　　D. A predator dinosaur which could have feasted on the "lake monsters"．

解析：细节理解题。由文章可知，B时间不正确；发现的不是一条鱼，故C也不正确。发现的是一个plesiosaur的遗骸，而不是predator dinosaur的遗骸，