百度试题 结果1 题目(A)1. Mammals give to young ones and feed them with milk. A. birth B. money C. car D. school 相关知识点: 试题来源: 解析 答案见上1.A由原文第一段第一句可知,哺乳动物生 幼崽,并喂它们奶。 反馈 收藏
Mammals, as we know, are vertebrates that give birth to live young (viviparity) but not only do they perform this function, there is something else that makes them unique such as feeding milk to infants that are still inferior and small copies of their parents. To a large extent a young...
They give birth to young ones that develop inside the mother, often surrounded by amniotic fluid. 5. Four Limbs and Heart Structure: Mammals typically have four limbs (two forelimbs and two hindlimbs) and possess a four-chambered heart, which is efficient for circulating blood....
Caption:it’s likely that some non-therian mammals were similar to modern marsupials (like theAntechinus agilisshown here) in giving birth to small, helpless babies. Images: Mel Williams, CC BY 2.0 (originalhere); John Baumgartner, CC BY 2. 0 (originalhere). Barring the almost unbelievable ...
influenced by climate change now.Now the birth number of rare (稀有的) mammals and the survival number of young ones are (11) B."The number of them is getting smaller and smaller,(12) Dwe must act as soon as possible,"an expert said."That is why it is so (13) Ato use such ki...
The birth number of rare (稀有的) mammals and the survival number of young ones are111 B. "The number of them is getting smaller and smaller 112,D we must act as soon as possible," an expert said. "That is why it is so13 A to use the app. It is going to tell us which ...
The Mediterranean monk seal gives birth to its young ones in undersea caves which are not easily accessible although historical descriptions show that till the eighteenth century, the monk seal used to give birth on open beaches. The coat of males is black and they are close to white from u...
Classification. Koalas are atype of mammal called marsupials, which give birth to underdeveloped young. They are so different from any other marsupial, however, that they have been classified into their own family, called Phascolarctidae.
In comparison with other rodents, hutias have very low reproductive rates and typically give birth to one or two young per litter; nevertheless in well protected areas some species can reach very high densities. For example, in Guantanamo Bay in Cuba, Desmarest׳s hutia, the least threatened...
Gileva and Chebotar (1979) record that, of eight XX daughters of XY dams who gave birth to young, seven produced both XX and XY females; the eighth gave birth to eight daugh- ters, all XX. These data are unfortunately inconclusive since the status of the eighth daughter is ambiguous. ...