天山-7-34,35,36

蓝羽

Q 35

According to the passage, until recently zoologists believed which of the following about all phocid mothers?

题目问的就是以前的观点。题干的until recently和文章开头的until recently对应。

winrewqnie

Q33

It can be inferred from the passage that
the females of all phocid species differ from the females of all otariid
species in that the female phocids

A. have shorter lactation periods

B. consume more food during lactation

C. consume a higher proportion of fat
stores

D. forage for food occasionally during their
lactation periods

E. delete a smaller percentage of their fat
stores during their lactation periods

Answer: A

请问如何推断？

温弗雷德

同问33题,请教强人~~

DONNY2005

line 12: O 的哺乳期是4个月到3年

line 23: P 的哺乳期是4－50天

诡异之处，是O先绝食5－11天，然后继续边吃边哺乳

所以，可能会误解为O的哺乳期只有5－11天

最后，原文提到两者最大区别是储存的脂肪不同，所以可能会忽略此处差别

sammaijgd

33题不仔细看,很容易错,是够诡异的了

marylou

35题

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 forage
at sea, where they replenish their fat
(15) stores, and nurse their young at breeding
sites. Zoologists had assumed that
females of all phocid 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.

文章通过对比来确定的35题的答案。O 哺乳时间长，在哺乳期间就去海里觅食物；

by contrast，All P哺乳时间短（在哺乳期结束后才去补充食物）。

sammaijgd

up

jennyb

题目是问的until recently zoologists believed which of the following about all phocid mothers,定位在文章第一句话.也就是老观点.而文章最后的红字部分是反对老观点的,跟问题没有关系.

所有还是选E

Jackie2005

Could someone post the question 37 and the answer? I do not have it.

Thanks a lot!!!谢谢谢谢谢

scorp_w

这篇文章我认为答案是一点错都没有的！我的段意如下：

Until recently, zoologists believed that
all species of phocids (true seals), a pinniped
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 forage
at sea, where they replenish their fat
(15) stores, and nurse their young at breeding
sites. Zoologists had assumed that
females of all phocid 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.

人们通常的认为！

However, recent studies on
harbor seals, a phocid species, found that
(25) lactating females commenced foraging
approximately 6 days after giving birth and
on average made 7 foraging trips during
29
the remainder of their 24-day lactation
period.

近期的反常发现

(30) The maternal strategy evolved by
harbor seals may have to do with their
small size and the large proportion of their
fat stores depleted in lactation.（解释） Harbor
seals are small compared with other phocid
(35) species such as grey seals, northern elephant
seals, and hooded seals, all of which
are known to fast for the entire lactation
period. Studies show that mother seals of
these species use respectively 84 percent,
(40) 58 percent, and 33 percent of their fat
stores during lactation. By comparison,
harbor seals use 80 percent of their fat
stores in just the first 19 days of lactation,
even though they occasionally feed during
(45) this period. Since such a large proportion
of their fat stores is exhausted despite
feeding, mother harbor seals clearly cannot
support all of lactation using only energy
stored before giving birth. Though smaller
(50) than many other phocids, harbor seals are
similar in size to most otariids. In addition,
there is already some evidence suggesting
that the ringed seal, a phocid species that
is similar in size to the harbor seal, may
also use a maternal foraging strategy.

对上诉发现的解释！最后一句是用来例证这个解释的！

adee