Which REE mining method in China is less environmentally invasive but produces less output?
A) Ion-absorption leaching
B) Open-pit mining
Given the environmental NGOs' concerns, which mining method would they likely advocate for if environmental preservation is prioritized?
A) Ion-absorption leaching
B) Open-pit mining
If China were to reduce its reliance on bastnaesite deposits due to environmental concerns, what would be the likely immediate consequence on REE output?
A) Increase in total output
B) Decrease in total output
C) No change in total output
D) Shift to alternative mining locations
How does the ion-absorption leaching method compare to open-pit mining in terms of environmental impact and output?
A) Lower impact and lower output
B) Lower impact and higher output
C) Higher impact and lower output
D) Higher impact and higher output
答案:
作者: pinx 时间: 2024-2-23 12:33
感谢分享! 作者: zsot 时间: 2024-2-23 12:34
d c d b c作者: Josephkiki 时间: 2024-2-23 14:25
Day70
CR
1. 解释题
答案选A,完全不知道原因,等一下看解析好了
RC
我的答案:DCBBD
正确答案:DCDBD
文章类型:现象解释型
文章主旨:否定了睡眠保护记忆的旧理论,提出促进遗忘的新理论
文章结构:
P1-反驳过去的错误理论认为睡眠有助于加强记忆,GT的新观点相反,认为睡眠不保护记忆,睡眠加速遗忘
P2-得出该理论的过程,观察到的现象
P3-该理论的机制作者: Katelynns 时间: 2024-2-23 21:16
CR:1. A 兔子稀少了,老鹰便开始吃roadkill,兔子减少可能不会影响到老鹰的食物量。
B 存活的都是壮年老鹰 主要的食物来源减少,存活的又都是壮年eagle,或许可以解释老鹰数目居高不下,不降反增反而有些矛盾。
C 该区域没有修建新路,因此roadkill数量不变 问题在于老鹰吃roadkill吗?
D 兔子少了,和老鹰一样吃兔子的竞争者数量减少,每个老鹰会因为竞争者减少而能吃到的兔子反而比现在还多吗?最后和A比较,A更直接 D成立需要的条件更多
E 大力保护扩大了老鹰群体
2.A 只有A直接提到了通过喝饮料摄入的维生素含量 其他选项都是个人diet, 饮料的维他命浓度会不会逐渐下降和影响消费者购买的因素(口味or健康),对于argument都是间接影响。
RC:
new discovery: sleep facilitate forgetting
silence after each syn burst
lower syn strength and more space and energy
DCBBD
DI: AADA作者: 为了G700 时间: 2024-2-23 22:23
Day70 CR
第一题,解释题,选D。
P: 一种病毒导致了兔子的减少,以兔子为食物的鹰随之减少。
C:但是鹰却增加了。
一种富含各种维生素的饮料很受欢迎
但是若服用超过日常推荐用量5倍的某些维生素,将会中毒
有人称一般不会有人服用超过2倍的用量
所以这个饮料很安全
问评估
D:大家是否会在食用了富含这些维生素的食物后,引用这个饮料 作者: Booya116 时间: 2024-2-25 15:52
CR:
第一题
P: Virus outbreak -> reduce rabbit population -> expect eagle population given eagles primarily prey on rabbits
C: But number of eagles increased.
D: Reduced rabbit population -> decrease in other predators competing w/ eagles -> eagle population goes up
D
正确答案:A
第二题
Beverage w/ various vitamins. If consuming over 5x recommended vitamins intake daily -> poisoning. But few people consumed more than 2x, so no health risk.
P3: G.T.的观点:这个现象表明,大脑正在scale down而不是build up during sleep. Synaptic connections的减弱很重要,只让最强烈的connection 留下来。Brain capacity to manage energy and space, 使其保持平衡。因此,我们醒来后会有更弱的overall synaptic connections, 可能会导致丢失一些记忆。
1. B: 睡觉时选择性地保留了更重要的connection
正确答案:D。 B错是因为说了strengthen(文章没提),还说了最重要(文章说的是最significant)。D的话在P1末尾和P3末尾都提到了
2. C
3. D
4. B
5. D
DI:
1. A;直接看表格,选A
2. 环境影响更重要的话,选择污染更少的,A
3.
a. Ion- southern china; small, less concentrated, in-situ leaching, though smaller footprint, still risks of groundwater contamination if not managed properly
b. Bastnaesite - Bayan Obo; larger, extensive open-pit mining, significant environmental impacts
c. 减少更多B deposits,产量会减少,B
4. 看表格,lower environmental and lower output. A作者: TheFoggyDew 时间: 2024-2-25 16:45
AABA作者: Emma醬 时间: 2024-2-25 18:34
看一下! 作者: Emma醬 时间: 2024-2-25 18:38
CR:
1. A
一般性归纳推理:
P: Rabbit数量急剧减少
C; 以R 为食的E数量也应该减少,但实际E数量明显增多
考虑: 1)样品偏差:无
2) 草率结论:有其他因素(Roadkill)
3) 谬论: 无
RC
通常认为深度睡眠有助于记忆。但是GT研究发现,睡眠辅助遗忘。
解释了这个发现的原理。
d
c
b (答案d 原文He argues that this weakening of synaptic connections is crucial, allowing only the most significant connections to endure. This theory ofers an explanation for the brain's capacity to manage energy and space efficiently 这个是文章强调的核心?)
b
d
CR
Q1- A
F: rabbits population decreased, eagles prey on rabbits
P: eagles population should be decreased as no food available, the eagles population increased, maybe other factors lead to the increase
C: eagles population increased
Q: discrepancy
Q2- D
F: a drink contains various vitamins and it’s poisoning to consume 5 times vitamins
P: this drink plus ordinary meal will not exceed 5 times vitamins of daily recommended amount
C: the drink has no harm to health as few people consume more than twice the recommended amount of vitamine
Q: evaluate
T: maybe
RC
Q1- D
Q2- C
Q3- B
Q4- B
Q5- D
Part1- propose a new theory regarding sleep and memory, sleep facilitate forgetting
Part2- further explain the theory from a scientist G, T, GT observes a phenomenon, total silence after each burst Part3- the function of this pattern, it gives brain a rest and more space, reinforce significant connections
DI
Q1- A
Q2- A
Q3- B
Q4- A作者: 时间哪 时间: 2024-3-5 09:26
Rc: dcbbd
Cr: ed作者: 红烩chatgpt 时间: 2024-3-7 10:10
Mark一下! 作者: 红烩chatgpt 时间: 2024-3-7 10:51
[attach]271542[/attach][attach]271543[/attach] 作者: 薯片家的 时间: 2024-3-25 18:00
CR: A D
RC: D C D B D
P1-传统的认为睡得越多,记忆力越好,但是G提出睡得多只会让记忆力消退
P2-晚上我们的大脑有1000此的NR活动,连接的密度到早上就消失了,但是T发现每次连接后面就是沉默
P3-据此T得出睡觉时大脑活动减缓,总之会降低记忆力