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发表于 2011-12-8 23:40:16 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
数学:
137、【害怕坏天气】DS有一个抛物线(parabola)的对称轴垂直于x轴,问这条抛物线y轴的焦点是不是大于0?
(1)抛物线 在x轴上的截距分别为-3和5
(2)抛物线上最大的一个Y值是20


代数n= 1~100, An = (-1)^(n-1)*1/n ,求100项的和
选100/101


代数n= 1~600, An = (-1)^(n-1)*1/n ,求600项的和 选项有〉6, 6, 2, 3 ,<1 我选了小于1

一个人在2:30的时候已经走了180米,在2:45的时候走了225米,问在405米的时候是几点 。。3:30


一个东西的VOLUM is 3254 (forget theexact number) cube millienmeter , then what is the volumn in cubemeter.(1meter=1000millienmeter)

114、【epanama】xyz are different prime numbers larger than 1, abc are positiveintegers, ask if x^a*y^b*z^c>100
    1)x+y+z=5
    2) forgot...
chose both


25.kathymocha一个半圆体装水,先是高r, 水面表面积为9000来吧,然后现在水的高是一半,此时水面表面积多少,是原来的3/4

48.piggypigp一个什么field由两个矩形相接一大一小一起大的在左小的在右出两个矩形面大的500 小的忘了。。好像是160。。。大矩形左边长20小矩形右边长10
field 就是图中所有画出来的边的总长度。
答案:选 132










75 V3.【lyrik】一个公司买了价值6000000的10。个座位的飞机,然后,飞机每飞一次乘坐要花6000的固定成本,每个人可以收1000元/次,问至少飞多少次能收回本,反正我最后选了 750


有个比较大小的 根号下3 , 3次根号27, 4次根号243 ,问哪个大?


作文:
AA:It is said thatunviserity hospital are better than private and community hospital , it is notthe case, the university hospaid paid less , have fewer staff , lower success surgeryrate ..OG 原题。
AI:几经有的。


逻辑: 一些商店建议发放VOCHER ,VOUCHER可以拿来买食物, 这样子可以帮助到BEGGER ,问支持。
选了个:人民一搬不会直接给钱给流浪汉,因为他们会拿去买烟酒。

说是古代的生物要是因为缺氧死的,就会有一种奇怪的姿势。有个地方有很多生物化石是被泥石流什么的压死得,因为泥石流会造成缺氧。问削弱。
我选了个一种病毒致死的时候也有这种奇怪的姿势。

还有个打牌的,真是没看懂,直接乱选了个。
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沙发
 楼主| 发表于 2011-12-9 00:14:52 | 只看该作者
阅读 :21. **business investment household saving
1.下列那种情况是会削弱作者的观点:
选项由:BUSINESS INVESTMENT INCREASWHILE HOUSEHOLD SAVING INCREAS
       BUSINESS INVESTMENTINCREAS WHILE HOUSEHOLD SAVING DECREAS
       ……
2.文章的最后一句话出了一个题。 忘记了。


11.**植物抵御害虫我把段落结构理了下,大概就是这3段,但是短些。
TheU.S. Department of Agriculture lists dodder among the country's 10 worst weeds.When a dodder seed sprouts, it doesn't grow roots. All its energy goes into atendril that shoots out in search of plants to tap for water and nutrients. Ifit's going to survive, it must latch on to a victim within about a week. Thevine grows into a spaghetti tangle and can attack multiple plants, stuntingtheir growth but not killing them. Of the 150 species of dodder,the researchers selected Cuscuta pentagona, says coauthor Justin Runyon, alsoof Penn State. This species bedevils tomato growers in California, where itcosts them an estimated $4 million a year in reduced yields.

De Moraes' team and other researchers have studiedthe volatile compounds released by plants that are mauled by caterpillars orother pests. At first, the researchers set various possible targets severalcentimeters from dodder sprouts. A pot of moist soil alone didn't attract theseedlings, nor did vials of dyed water that created colored light.But a potwith a young tomato plant, and even a cup of perfume made of tomato volatiles,did attract the seedlings To minimize any confounding cues, such as shading orlight, the researchers then set the possible attractants in chambers connectedto the plant by curving pipes. Again, the seedlings grew toward the scent. Testingvarious victim species, the researchers found that dodder grows towardimpatiens and tomatoes.Wheat won't sustain dodder well, and given a choice,parasite seedlings shunned it and grew toward tomatoes.


When researchers tested seven ingredients in thetomato perfume individually, three of them proved attractive to the dodder. Oneof those attractants showed up in wheat, but the wheat perfume also contained asubstance that repelled the seedlings. Such a repellent might offer a new routefor fighting dodder, Mescher speculates.  



1Which of followingcan be inferred from the second paragraph?
Choice : the doggy plant more prefer somekind of plants than others.
Other choice : dodder and impatiens containthe same perfume chemical.

2.what is the use of the last paragraph.
Choicegive implication of …..
Other choice : support paragraph 1 .
         Give example of ……

3.主指题:
板凳
发表于 2011-12-9 01:33:53 | 只看该作者
...thx
地板
发表于 2011-12-9 02:39:51 | 只看该作者
这么晚,辛苦啦~~
5#
发表于 2011-12-9 02:48:26 | 只看该作者
阅读 :21. **business investment household saving
1.下列那种情况是会削弱作者的观点:
选项由:BUSINESS INVESTMENT INCREASWHILE HOUSEHOLD SAVING INCREAS
       BUSINESS INVESTMENTINCREAS WHILE HOUSEHOLD SAVING DECREAS
       ……
2.文章的最后一句话出了一个题。 忘记了。
-- by 会员 tanqingye (2011/12/9 0:14:52)


辛苦楼主整理啊!!!想问一下楼主这个21篇和狗狗考古里面的内容是一致的么~~~是不是就是上个月的那篇啊?
6#
 楼主| 发表于 2011-12-9 09:11:06 | 只看该作者
yes , it is the same .
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