北美4号(没换题库)

phanly

刚考完回来 M50 V26  640
数学80%左右是寂静,逻辑也有寂静出现,阅读四篇都是
最近考的大虾把寂静弄熟吧,我先休息下, 有能想到的等会回忆上来,今天我是幸运的,没有那么多人帮助,不会有机会去考试的,没带护照,好心的officer把我的考试推迟了两个小时等100公里外的护照....

作文:
AA: 一个公立高中有200多门课,但是一个私利高中只授80多门课,同时毕业率也很高,所以提议要让公立高中减少一半的授课量,这样学生才会有higher perfromance.
AI: finacial gain is the most important factor in choosing a career.

数学想到一个非寂静的题，我用了长时间，最后不知道做对没
坐标系中, (a,b)到(c,d)的距离 等不等于 (a,b)到(d,c)的距离  后边还给出了两点之间距离公式
              条件一: (a方-b方)*(c方-d方)=0
              条件二: (a方+b方)*(c方+d方)=0
              我好像选了d

寂静 327题:  还有能想起来比较经典的就是那道工作效率 x,y,2问一个小时能能达到50的题,选d  
       258题:
       239 v2
       110
还有一个变体就是 y=10^20-x, 这道题一定要掌握方法,它前边给的数字不一样

逻辑:
考了 狗粮那题,直接选的a

阅读:
海豹,这篇是我唯一没看的寂静,偏偏考了,我早上只大概看了下文章,没看题目,因为有人说题目不一样,但我考得版本完全和gwd一摸一样,题目出题的顺序都一样,在此贴上gwd原文加答案
Until recently, zoologists believed that all species of phocids (trueseals), a pinniped family, use a different maternal strategy than dootariids (fur seals and sea lions), another pinniped family. Motherotariids use a foraging strategy. They acquire moderate energy storesin the form of blubber before arriving at breeding sites and then fastfor 5 to 11 days after birth. Throughout the rest of the lactation(milk production) period, which lasts from 4 months to 3 yearsdepending on the species, mother otariids alternately forage at sea,where they replenish their fat stores, and nurse their young atbreeding sites. Zoologists had assumed that females of all phocidspecies, by contrast, use a fasting strategy in which mother phocids,having accumulated large energy stores before they arrive at breedingsites, fast throughout the entire lactation period, which lasts from 4to 50 days depending on the species. However, recent studies on harborseals, a phocid species, found that lactating females commencedforaging approximately 6 days after giving birth and on average made 7foraging trips during the remainder of their 24-day lactation period.

   The maternal strategy evolved by harbor seals may have to do withtheir small size and the large proportion of their fat stores depletedin lactation. Harbor seals are small compared with other phocid speciessuch as grey seals, northern ele- phant seals, and hooded seals, all ofwhich are known to fast for the entire lactation period. Studies showthat mother seals of these species use respectively 84 percent, 58percent, and 33 percent of their fat stores during lactation. Bycomparison, harbor seals use 80 percent of their fat stores in just thefirst 19 days of lactation, even though they occasionally feed duringthis period. Since such a large proportion of their fat stores isexhausted despite feeding, mother harbor seals clearly cannot supportall of lactation using only energy stored before giving birth. Thoughsmaller than many other phocids, harbor seals are similar in size tomost otariids. In addition, there is already some evidence suggestingthat the ringed seal, a phocid species that is similar in size to theharbor seal, may also use a maternal foraging strategy.

1. It can be inferred from the passage that the females of all phocidspecies differ from the females of all otariid species in that thefemale phocids

	have shorter lactation periods
	consume more food during lactation
	consume a higher proportion of fat stores
	forage for food occasionally during their lactation periods
	deplete a smaller percentage of their fat stores during their lactation periods

2.The primary purpose of the passage is to

	present evidence that several phocid species use the maternal fasting strategy
	explain why the maternal strategy typically used by phocids is different from the maternal strategy used by otariids
	argue that zoologists' current understanding of harbor seals' maternal strategy is incorrect
	describe an unexpected behavior observed in harbor seals and propose an explanation that may account for that behavior
	describe evidence concerning the maternal strategy of the harbor sealand suggest that the harbor seal belongs to the otariid rather than tothe phocid family

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

	Their fasting periods after giving birth were typically shorter than those of otariids.
	Their lactation periods were generally as long as those of comparably sized otariids.
	They acquired only moderate energy stores in the form of blubber before arriving at breeding sites.
	They depleted less than a third of their stored body fat during lactation.
	The replenished their fat stores only after their lactation period ended.

4.The author of the passage mentions ringed seals most probably in order to


correct answer: ADEE

	provide an example of a phocid species that fasts throughout its entire lactation period
	provide an example of a phocid species whose maternal strategy is typical of phocid species
	provide an example of a phocid species that may deplete an even higherproportion of its fat stores during lactation than harbor seals do
	support the assertion that harbor seals are smaller than many other phocids
	support the assertion that harbor seals' maternal strategy may be related to their small size

piggy1128

cong~~~Thx for sharing!!!!!!!!!

zylrt

真是感动~！撒花~！