Microscopic plants called algae grow inside the top layer of sea ice in the Antarctic if enough sunlight reaches that layer of ice and enough seawater, which contains nutrients, reaches that layer after splashing onto the surface. Even though moderate snow cover reduces the sunlight that filters into the top layer, sea ice with moderate snow cover typically contains even more algae in the top layer than does sea ice with less snow cover.
Which of the following, if true, most helps to explain the apparent discrepancy?
狗主7月22早场,住的旅馆门外有挖掘机,睡眠质量极差然而结果还不错。感恩CD我要回(bao)报(fu)社会~!
数学中了挺多鸡精的,然而有些鸡精描述不清或者错了。。然后狗主还掉坑了,算了都是泪。。。
DS :
1. 997乘1003/x,what the value of thousand digit of this outcome?
(1) x 的十位数是8;
(2)80<=x<90. (。。等等我这题好像条件记错了,回头一看这俩一个意思啊。。。细思恐极,我估计做错了)
2. 中了鸡精那道,Joni 不喜欢Fred 什么的,还有谁不喜欢谁的之类。最后问Bill参加了吗?我也和那位狗主一样选的E,大家遇到可以秒选。
引用自@kryprpr:“ DS. 几个人要参加聚会。joni dislike Fred, Fred dislike Bill,sally dislike amanda。这些互相不喜欢的人之间只要其中一个出现,另外一个就不会出现。 现在joni很想了解Bill, 所以如果Bill 出现,Joni就会出现。而因为sally和joni是好朋友,所以如果sally出现,那么joni也会出现。问Bill是否会出现。
(1)Joni 会出现。 (2)Sally会出现。
我觉得应该选E。”
传送门(第四题) http://forum.chasedream.com/thread-1114162-1-2.html
3. 一个直角梯形ABCD,上底边那里有一个P,上底边长度等于右侧边长度(也就是它的高),求四边形ABCD的面积。
(1) DP=6;
(2)AD=10.
又回忆起来一道DS:
问根号下6ab 是否为整数?
(1)ab是multiple of 6
(2) a and b are prime numbers
有坑,应该是选C
PS:
1. 花名册那道鸡精中了。引用@小小圆子“老师教三个班E,M,S,roster(花名册)上分别有26,28,18人,同时在E,M班的有xx人(记不清数字),同时M,S有yy人,同时ES有zz人,同时在三个班的有4人。若老师把所有名字合并在同一张花名册,使得没有重复的名字,求这张花名册的人数。”
传送门:http://forum.chasedream.com/thread-1114298-1-2.html(第三题)
2.有个人买了sofa and armchair with the same amount of money 然后他转手卖掉。The gross profit of armchair is 10%. Sofa的价格比armchair高20%,问sofa的gross profit比armchair 的gross profit 多多少percent?
3.有个立方体(见图,我不会画图在网上找了一个可能字母不大对,见谅)
阅读:
1.中了那个英国还有印第安人的那个。先说Sovereign的定义:是有power(我忘了政治还是军事方面的power)还有一定的territory。一开始呢,英国人承认American Indian有sovereign,尤其是一个叫做Iroquois的部落。后来呢英国人和American Indian的关系变了(此处有题),虽然有L和M两个科学家坚持印第安人还是有主权的,但主流的英国人的态度(认为印第安人是有主权的)diminish.
在American Indian revolution中,为了证明印第安人主权的合法性(此处有题,应该选以前英国人认为他们不合法),很多的activist就鼓励印第安人和他们签订treaty,这使得一些印第安人的influence增加了(此处有题)。
2. Homo genus那个skeleton的我也中了,然而我完全不知道它在讲啥。。。。最后一道阅读已经心思不在这儿了呵呵嗒。请阅读菌增加频率,静待考古。
作文:
说有一家local bookstore名叫Food for Thought是specialized cookbook store. 这个店的owner 写了个email给manager:After successful years of sales,他想进一步扩大销售。建议就是学习那些major bookstore chains以低价卖一些best-seller的书来吸引顾客,这样就可以increase sales并且realize maximum profts 因为他要卖低价的书,所以为了offset the cost决定要discontinue demonstration of cooking by local chief.
还算挺好写的。我攻击的是: 1. 错误类比。这个local bookstore可能最吸引人的就是localization,如果换成人家的策略卖一些best-seller书,可能以前的顾客都会流失,又吸引不来新顾客。
2. 无关因果。可能人家那些major bookstore之所以很成功,不是因为他们的低价策略,可能有别的factors。
3. 我好想还攻击了个啥。。忘记了。。
Microscopic plants called algae grow inside the top layer of sea ice in the Antarctic if enough sunlight reaches that layer of ice and enough seawater, which contains nutrients, reaches that layer after splashing onto the surface. Even though moderate snow cover reduces the sunlight that filters into the top layer, sea ice with moderate snow cover typically contains even more algae in the top layer than does sea ice with less snow cover.
Which of the following, if true, most helps to explain the apparent discrepancy?
A As the weight of accumulated snow forces ice lower in the water, more seawater splashes onto the surface and seeps through the snow.
B Seawater in the Antarctic often contains higher concentrations of nutrients than does seawater in more temperate regions.
C As the air temperature around sea ice decreases during the winter, the likelihood decreases that snow will fall and thus add to any existing snow cover.
D The nutrients on which algae rely are common in seawater throughout the Antarctic.
E More sunlight filters through a layer of ice than through an equally thick layer of snow.
逻辑是这题吗??