1.哺乳动物觅食 第三题 T-4-26:T-7-35Accordingto the passage, until recently zoologists believed which of the following about all phocids mothers? A. Their fasting periods after giving birth were typically shorter than those of otariids. B. Their lactation periods were generally as long as those of comparably sized otariids. C. They acquired only moderate energy stores in the form of blubber before arriving at breeding sites. D. They depleted less than a third of their stored body fat during lactation. E. The replenished their fat stores only after their lactation period ended. 为什么选E不选A? -- by 会员 bfrist (2011/12/3 22:49:13)
until recently, zoologists believed...是问的旧观点,A是事实,新旧观点里都是一样的,禁食期确实短。新旧观点的区别仅仅在于神马时候出门找吃的屯脂肪 |