Gap (笔试：gap 缺口 ， 裂口 = opening)
Generate 产生, 发生
Given = particular
gap (来源：英语学习门户网站EnglishCN.com)

hence =therefore
harsh =drastic
hazard=danger
haul (拖拉, 拖运 )= pull
Heightening (提高，升高) = increasing
hider = interfere ???? (笔试：hide = conceal)
highlight /layer==inner ?????
Hub 中心=center
Hydroelectric (adj.水力 发电的 )
highlight/layer---inner
hider-interfere
heightening--increasing
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--center,
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
hamper--make difficulty
heed--notice
hold -- propose
hold--keep up
heighten--increase

indigenous"----native (in the context),
incorporable = included
immediately = closest( 说类人猿是人类最近的进化祖先)
In and of themselves (not sure) = alone
Incorporable= Included (Incorporable adj.可结合的, 可包含的 )
indemention
Initiate =begin;
Instant = moment (adj. N. 片刻，瞬间)
Invariably = always
initiate =begin;
in spite of that : HOWEVER
immediately: closest( 说类人猿是人类最近的进化祖先)
Indemention Ingemination indemnification
In quantity--in a large amount of
inauspicious--unfavorable
intimidating 威吓, 胁迫
incidental--minor point
incoherently 无条理的
incorporate--include
illusion n.幻想
immense adj.极广大的, 无边的, <口>非常好的
ingenuity n.机灵, 独创性, 精巧, 灵活性
ingenuity-- resourcefulness
ingenious adj.机灵的, 有独创性的, 精制的, 具有创造才能
inhibit --hindered inhibit
invade -- move into
invaluable--highly useful

jeopardy=threaten
Judge (判断，评价) = estimate
jolting --shocking

key--significant

landscape=scenery
luxuriant=thriving( 答案还有moist)
launch = start
lack--without
linked--connected