con·tro·ver·sy

"disputation, debate, prolonged agitation of contrary opinions," late 14c., from Old French controversie "quarrel, disagreement" or directly from Latin controversia "a turning against; contention, quarrel, dispute," from controversus "turned in an opposite direction, disputed, turned against," from contra "against" + versus "turned toward or against," past participle [过去分词] of vertere "to turn".

advert [from ad- 'to' + vertere 'to turn']

1. mention
2. advertisement =ad

convert [from Latin convertere 'to turn around, convert', from com- + vertere 'to turn']
divert [Origin: divertir, from Latin divertere, from vertere 'to turn'] 转移; 转向

inadvertent [from advertere 'to turn your mind to'] 漫不经心的; 无意的 =accidental, unintentional ≠deliberate
→absent-minded, preoccupied

extrovert [Origin: extra- + vertere 'to turn'] 外向 →extroverted
introvert [intro- + -vert (as in divert)] 内向 →introverted

invertebrate, "having naturally no backbone," 1819, from Latin in- "not", from vertebra "joint or articulation of the body, joint of the spine" (see vertebra). As a noun, "an invertebrate animal," 1826. “关节”和"turn"沾边。

• vertebra: any one of the segments of the backbone
• the vertebral column: 脊柱
• vertebrate: 有脊柱的; 脊椎动物

versatile [Origin: Latin versatilis 'turning easily', from versare 'to turn'] 多用途的; 多才多艺的

invert [Origin: invertere, from vertere 'to turn'] 倒置; 倒转; 颠倒
revert [from Latin revertere 'to turn back', from vertere 'to turn'] 恢复; 回到
pervert [from Latin pervertere, from vertere 'to turn'] 走上邪路

25 Controversial Topics: Position Paper Guide

A position paper (sometimes position piece for brief items) is an essay that presents an arguable opinion about an issue – typically that of the author or some specified entity. Position papers are published in academia, in politics, in law and other domains. The goal of a position paper is to convince the audience that the opinion presented is valid and worth listening to. Ideas for position papers that one is considering need to be carefully examined when choosing a topic, developing an argument, and organizing the paper.

1. Gun Control 美国得州小学枪击事件
2. Abortion
3. Religious Freedom
4. Animal Rights
5. Vaccines 美国新冠死亡人数已超百万
6. Privacy Rights
7. Free-Market Capitalism
8. Global Climate Change
9. Evolution
10. Marijuana [大麻] Legalization
11. Capital Punishment [死刑]
12. Marriage Equality
13. Immigration Reform
14. The Trump Presidency
15. The Opioid [阿片类] Crisis
16. Transgender Rights
17. Federal Livable Wage
18. White Supremacy
19. The Green New Deal. Green New Deal (GND) proposals call for public policy to address climate change along with achieving other social aims like job creation and reducing economic inequality. The name refers back to the New Deal, a set of social and economic reforms and public works projects undertaken by President Franklin D. Roosevelt in response to the Great Depression. The Green New Deal combines Roosevelt's economic approach with modern ideas such as renewable energy and resource efficiency.
20. Electoral College
21. Black Lives Matter 乔治·弗洛伊德
22. Cancel Culture. Cancel culture or call-out culture is a phrase contemporary to the late 2010s and early 2020s used to refer to a form of ostracism in which someone is thrust out of social or professional circles – whether it be online, on social media, or in person. 
23. Student Debt Crisis
24. The Israeli-Palestinian Conflict
25. Universal Healthcare

以上纯转贴。我个人认为有些没啥可争论的。

六级/考研单词: prolong, agitate, contrary, quarrel, contend, versus, advertise, convert, divert, deliberate, absent, preoccupy, outgoing, spine, noun, segment, invert, reverse, controversy, issue, author, entity, academy, domain, convince, valid, abort, secular, vaccine, globe, evolve, punish, immigrate, reform, supreme, undertake, depress, renew, electoral, contemporary, thrust, offline, medium