探阅读理解What do sharks, turtles, chickens, and crocodiles have in common? They all lay eggs, and they are all living relatives of dinosaurs.Dinosaurs first appeared about 245million years ago. Sadly, all the dinosaurs except the flying ones died out around 66million years ago. So, our kno...
ryan daly some sharks lay eggs and the embryo developing inside the egg is at risk from a wide range of predators. although shark egg cases are often tough and leathery to protect their contents, an egg without its adult parents to defend it makes for vulnerable prey. in australia, large ...
What do sharks(鲨鱼), turtles(乌龟)and chickens have in common? Of course, they’re all animals. If you know more, you might say they all lay eggs. However, do you know they’re all living relatives of dinosaurs(恐龙)? Then how did dinosaurs disappear(消失)on the earth? Dinosaurs ...
What colors are sharks attracted to? Do whale sharks lay eggs? Do ostriches lay unfertilized eggs? What are emu eggs? Do ostriches lay eggs? How many eggs does a queen bee lay? How does a peacock protect itself? What are baby monotremes called? What color are fennec foxes? What color...
Do whale sharks lay eggs? What is a mammal? What mammals survived the dinosaur extinction? How many eggs do chickens lay a year? What allowed for mammals to become the dominant species? Are monotremes endotherms? At what age do ostriches lay eggs? What mammals have opposable thumbs? What ...
根据第一段 中的" What do sharks, turtles, chickens and crocodiles have in common"及" they all lay eggs"可知答案为 A。 32.A 【解题思路】 细节理解题。根据第二段中 的"all the dinosaurs except the flying ones died out around 66 million years ago"可知应选 A。 33.C 【解题思路】 代词...
Do whale sharks lay the biggest eggs? What was the largest meat eating dinosaur? What is a baby quail called? How many eggs do monotremes lay? At what age do ostriches lay eggs? How big are ostriches? What is the gestation period of a chicken?
What do sharks, turtles, chickens, and crocodiles have in common? Of course, they're all animals. If you know more, you might say they all lay eggs. However, do you know that they are all 1 relatives o dinosaurs(恐龙)? Dinosaurs first appeared about 245 million years ago. They 2 the...
What shark lays spiral eggs? Bullhead sharksproduce spiral- or corkscrew-shaped eggs. Emma Bernard, a fossil fish expert at the Museum, explains the reasons behind the unusual shape. What does a horn shark egg look like? Horn sharks lay eggs. The egg case is about 5 inches long andshaped...
Do sharks lay eggs? Some sharks lay eggs, but many species give birth to live young. 8 What is the role of sharks in the ecosystem? Sharks help maintain the balance of marine ecosystems by controlling the population of other marine life. 8 What is the significance of gill slits in sharks...