[单项选择]

{{B}}TEXT B{{/B}}

Once found almost entirely in the western United States and ill Asia, dinosaur fossils are now being discovered on all seven continents. A host of new revelations emerged in 1998 that promise to reshape scientists’ views of dinosaurs, including what they looked like and when and where they lived.
It is doubtful that Tyrannosaurus Rex had lips or that Triceratops had cheeks, says Lawrence Witmer, an assistant professor of anatomy at Ohio University in Athens, Ohio. Witmer was a leading researcher for a study on dinosaur anatomy that was presented at the annual meeting of the Society for Vertebrate Paleontology, which concluded on October 3 in Snowbird, Utah.
Witmer’s study reached its conclusions by using high-tech computerized axial tomography ( CT or CAT) scans &long with comparative anatomy studies. For example, the theory that Triceratops and similar dinosaur species had cheeks was based on past co
A. Tyrannosaurus Rex had lips and Triceratops had cheeks
B. dinosaurs might have looked like mammals such as sheep
C. dinosaurs might net have looked like what we thought
D. dinosaurs must have looked like birds or crocodiles

最新试题

• ●    [多选题]按照应急演练的内容,可将应急演练分为( )几种。
• ●    1883年，（）的《纽约世界报》的出现是新闻史上的一大转折。
• ●    [判断题]救护队抢救外伤、骨折的遇险人员要作包扎、止血、固定等简单处置。
• ●    男性，58岁。吸烟30年。咳嗽咳痰20余年，活动后气急4年，偶有下肢轻度水肿。查体：桶状胸，两肺呼吸
• ●    一侧肺泡呼吸音增强，见于（）。
• ●    [单选题]根据《煤矿建设安全规范》