hearten----encourage
heed——notice
heighten——increase
Heightening (提高，升高) = increasing
hence =therefore (hence adv.因此, 从此)
hider = interfere ???? (笔试：hide = conceal)
hold —— propose
hold——keep up
hollow n.洞, 窟窿, 山谷 adj.空的, 虚伪的, 空腹的, 凹的 adv.<口>彻底vi.形成空洞 vt.挖空, 弄凹
host——great number
世纪末19世纪初美国制造业的革新.其中有一题 tailors, butchers and a (host) of trades began to…)
Hub 中心=center
Hydroelectric (adj.水力 发电的 )
heighten——increase
I
illusion n.幻想
immediately = closest( 说类人猿是人类最近的进化祖先)
immense adj.极广大的, 无边的, <口>非常好的
impair
impetus=stimulus
imposing- enormous
Inaccessible – unreachable
inauspicious——unfavorable
in and of themselves (not sure)= alone
in charge of == responsible for
incidental——minor point (incidental adj.附带的, 伴随的, 非主要的, 偶然的, 容易发生的n.伴随事件, (用复数)杂项、杂费)
incoherently 无条理的
inconsequence
Incorporable= Included (Incorporable adj.可结合的, 可包含的 )
incorporate——include
indemention ??? {可能是Ingemination(vt. 重申)/ indemnification(n.保护, 保障, 补偿, 补偿物)}
indicating = suggesting /assuming (我选前一个)
indigenous----native (in the context)
induce:    generate/determine我选的determine
inevitable ----unavoidable

in earnest=seriously
in fact
ingenious adj.机灵的, 有独创性的, 精制的, 具有创造才能
ingenuity n.机灵, 独创性, 精巧, 灵活性
ingenuity—— resourcefulness (resourcefulness n.足智多谋)
Inhabit -- Live
inhibit ——hindered (hinder adj.后面的v.阻碍, 打扰) Control, limit, restrain
inimical---unfriendly----2月高频
in keeping with==consist with
initiate =begin
innocent (adj.(～ of) 清白的, 无罪的, 天真的, 无知的)
innumerable = countless
In quantity——in a large amount of

inroad (n.(突然)袭击、侵犯, 攻击(upon, on, into);[常用复]损害; 侵蚀; 花费(into, on)
inscribe-- written
Instant = moment (adj. N. 片刻，瞬间)
intangible (adj.难以明了的, 无形的)
intensify-strengthen
intimidating 威吓, 胁迫
intricate----complicate
in spite of that : HOWEVER
invade —— move into (invade vt.侵略, 侵袭, 拥挤)
invaluable——highly useful (可能是选反义词？)
invaluable = precious
Invariably = always
inventive 善于创造发明的
J
jeopardy=threaten
jolting ——shocking
Judge (判断，评价) = estimate
K
keeping with=?       选项：consistent of/free of/fill with/
key——significant
L
lack——without
laden---loaded
landscape=scenery
launch = start
limited-stricted
linked——connected
luxuriant=thriving( 答案还有moist)
M
magnitude——extend
maintain-continue
make sense – 我选 logical
mammoth-----huge    注mammoth做adj时=巨大的
mask = disguise   MASKED 伪装的，隐藏的，潜伏的
masked
mastery的形容词形式 ----expert
matched=equaled/compared我选的equaled
matter文中issue
mean --- signify (还有一选项intend)
means=method
memorable---noticable
merit (n.优点, 价值v.有益于)
Meticulous ===careful
Milestone = significant events ( in the context) (select in whole paragraph, spend much time for this one)
migrant - --movement
milestone——significant development
minutely adv.详细地, 精密地
minutely——finely
minute ——tiny
minuscule——tiny
misnomer=wrong name
model：（1）theory (2) method 不是很确信， 我选了 theory
(model:的语境是 the rocks have different the models of origin)
model--form/frame (我选的form)
modification——alteration(另有clarification),
monitored——observed
Moreover—additionally
moreover=in addition( 答案还有thus)
monopolize form --dominate
monotonous——boring
Mosaic == Things considered together as a pattern
motive (n.动机, 目的 adj.发动的, 运动的)
motif--pattern (motif（艺术作品的）主题，主旨,图案,主题曲 (亦作：motive)
(pattern n.模范, 式样, 模式, 样品, 格调, 图案 vt.模仿, 仿造, 以图案装饰 vi.形成图案)
mounting
N
nature——character    易混选项origin
notable---a: REMARKABLE b : DISTINGUISHED, PROMINENT
note--record
notion-general idea
notwithstanding ——despite

O
obscure=conceal 答案有干扰选项diminish
obscured-- conceal
obtain ——acquire
occasion-event