2016年12月英语四级考试全真模考练习试卷一_第4页

　　Questions 31 to 35 are based on the following passage:?

　　An American scientist has found that many images of dinosaurs may be wrong. For years, pictures of the ancient creatures have shown their nose openings near the top of the head. The new study suggests the dinosaurs’ nostrils were just above the mouth.?

　　Dinosaurs used their nostrils to breathe,smell and control their body temperature.The new theory could help explain how the huge creatures were able to survive by using their sense of smell to find food,a mate and possible enemies. ?

　　Lawrence Witmer of Ohio University in Athens,Ohio led the study.The publication science reported his findings.?

　　Many of the early dinosaur remains recovered by scientists were from huge creatures called sauropods. Scientists believed that sauropods must have lived in water because their bodies were so huge and their necks were so long.?

　　Nostrils high on the head would have permitted the dinosaurs to breathe while partly under water. The discovery of a sauropod head bone in 1884 added support for this belief. The skull had a large hole at the top of the head. ?

　　Professor Witmer says experts learned years later that cet6w.com were not sea creatures. But he says the earlier theory about nostril position was extended to other dinosaurs. ?

　　Only dinosaur bones have survived as fossil remains. Scientists have never recovered dinosaur remains of soft tissue. Scientists interested in the physical appearance of dinosaurs often study birds and animals similar to the ancient creatures. Professor Witmer examined forty-five kinds of birds, crocodiles and lizards that are the closest living relatives to dinosaurs. He noted the placement of soft tissue through hundreds of x-ray images and by cutting pieces of tissue. Soft tissue leaves markings on bone. Professor Witmer used this information to make a map of the likely position of soft tissue in the dinosaurs’ noses. He cet6w.com and reptiles he studied share a common nostril position.?

　　Professor Witmer found that the hole scientists once thought was a nostril in dinosaurs is just one part of the larger nasal passage. He found that the nostrils were farther forward and closer to the mouth. He says this new nostril position was true for all dinosaurs.?

　　31.Where is this article likely to be excerpted from??

　　A) Biology textbook.　B) Scientific report.?

　　C) Science fiction.　D) Essay.?

　　32.One advantage with Nostrils high on the head is to ____.?

　　A) use sense of smell more efficiently?

　　B) help them move fast and alert?

　　C) enable them to find more food?

　　D) help them live under water more easily?

　　33.Which of the following may not be a reason why Professor Witmer studies crocodiles and lizards in his experiments??

　　A) They are close relatives to dinosaurs.?

　　B) Their soft tissues survive as fossil remains.?

　　C) Their soft tissues have similar traits with dinosaurs.

　　D) He cannot find living dinosaurs.?

　　34.What does “this information” (in paragraph 7) refer to??

　　A) Soft tissues.　B) Bone.?C) Markings.　D) Nose.?

　　35.The word “passage” (Line 2, Para.8) means____.?

　　A) gate　B) channel?C) cross　D) paragraph?

　　31.【答案】B。?

　　【译文】本篇文章更像是一篇科学报道的一部分。?

　　【试题分析】题材判别题。?

　　【详细解答】可以看出C)科幻小说D)散文均不可能。而本文更像是一篇关于新发现的报道,因此B)正确。?

　　32.【答案】D。?

　　【译文】鼻孔高居头上可以使恐龙在水下生活的更自在。?

　　【试题分析】细节推理题。?

　　【详细解答】关键语句:“Nostrils high on the head would have permitted the dinosaurs to breathe while partly under water.” B),C)均与文章无关;A)应与新观点有关，可见文中所述“The new theory could help explain how the huge creatures were able to survive by using their sense of smell to find food, a mate and possible enemies.”?

　　33.【答案】B。?

　　【译文】Professor Witmer以鳄鱼和蜥蜴为实验研究对象并不是因为它们的软组织可以作为化石幸存下来。?

　　【试题分析】客观事实题。?

　　【详细解答】关键语句:“Scientists interested in the physical appearance of dinosaurs often study birds and animals similar to the ancient creatures. Professor Witmer examined forty-five kinds of birds, crocodiles and lizards that are the closest living relatives to dinosaurs.”可以看出A),C)正确，而D)显然正确;B)文中未提。?

　　34.【答案】C。?

　　【译文】句法分析题。?

　　【试题分析】句中的“信息”应指代软组织留下的标记。?

　　【详细解答】关键语句“Soft tissue leaves markings on bone. Professor Witmer used this information to make a map of the likely position of soft tissue in the dinosaurs’ noses.”可见应指代markings。

　　35.【答案】B。?

　　【译文】词汇分析题。?

　　【试题分析】“passage”应指channel(通道)。?

　　【详细解答】A)gate(门) C)cross(十字路口) D) paragraph(段落)均不符合题意。