天山-7-34,35,36

lele19832002

我从你画蓝线的地方看不出选d的理由啊，反而越看越觉得E不对（你说a不对的理由我到同意

                        Until recently, zoologists believed that

all species of phocids (true seals), a pin-

nipped family, use a different maternal

Line                 strategy than do otariids (fur seals and

(5)                   sea lions), another pinniped family. Mother

otariids use a foraging strategy. They

acquire moderate energy stores in the

form of blubber before arriving at breeding

sites and then fast for 5 to 11 days after

(10)                  birth. Throughout the rest of the lactation

(milk production) period, which lasts from

4 months to 3 years depending on the

species, mother otariids alternately for-

age at sea, where they replenish their fat

(15)                  stores, and nurse their young at breed-

ing sites. Zoologists had assumed that

females of all phocids species, by contrast,

use a fasting strategy in which mother

phocids, having accumulated large energy

(20)                  stores before they arrive at breeding sites,

fast throughout the entire lactation period,

which lasts from 4 to 50 days depending on

the species. However, recent studies on

harbor seals, a phocids species, found that

(25)                  lactating females commenced foraging

approximately 6 days after giving birth and

on average made 7 foraging trips during

the remainder of their 24-day lactation

period.

蓝线部分是以前的观点，应该是e所说的，而红线部分，即however后，很清楚说明，在它长达24天的lacatation period，它要平均出去foraging7次啊，那不是去replenish了么？

[此贴子已经被作者于2005-7-21 14:42:56编辑过]