Turtles all have shells, some just have them inside their skin, like this Eastern Pacific leatherback turtle. (Image credit: George L. Shillinger) While most turtles sport a hard, protective shell on their backs, leatherback sea turtles have their bony protection embedded under their skin and...
第二节(共10小题; )阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。Do you know that sea turtles have been li
“Sea turtles are just something that I really love, "she says. The ocean swimmers have reasons to hide in their shells.Their population is decreasing. They are killed for their meat and eggs in some countries. Others are injured by boats.Casey enjoys thinking of new ways to help se a ...
Do amphibians have two uteri? Do all amphibians come from an egg? Do sea turtles have backbones? Are all amphibians born in water? Are loggerhead turtles amphibians? Are sea turtles amphibians or mammals? How does the lack of an amniotic egg limit amphibians?
A.They don’t use teeth to eat. B.They have a good sense of smell. C.Sea turtles are more adaptable to life at sea. D.Different species have different shells. 小题2:The underlined phrase “near-sighted eyes” in the second paragraph means___.A....
Why do turtles have shells? From studying turtle embryos, scientists know that aturtle's shelloriginates from its ribs and vertebrae. This form originated over 250 million years ago, by which time modernturtle ancestorsthat lived on land had evolved half a shell, expanding from the low...
they hide in their shells.Sea turtles,however,have soft,flatter shells . They can ' t hide inside , but they can swim away really fast . When cold weather comes , land turtles dig holes in the ground and sleep . They are too slow to move to warmer places . In contrast , sea turtle...
she says.The ocean swimmers have reason to hide in thei shells. Their population is decreasing. They arekilled fortheir meat and eggs in some countries. Others are injured by boats.Casey enjoys thinking of new ways to help sea turtles. Recently, she teamed up with a coffeecompany to raise...
Male sea turtles never come back to its birth place on sand from where it was hatched. In order to give predators the slip, females usually burrow vacant shells in various places on sand. As soon as a musk turtle sniff danger, he emanates a disgusting odor. ...
【小题1】Which of the following statements is NOT true about sea turtles? A.They don’t use teeth to eat. B.They have a good sense of smell. C.Sea turtles are more adaptable to life at sea. D.Different species have different shells....