extreme
evoke=stimulate
engage=involve
exceeded = surpassed
employ=use
exceedingly -- extremely
endangered ( 将要绝种的) = abundant（反义词，句中选）
Enrich = enhance 选项里有 enhance/conceal/enlarge
entail = involve entail: vt.使必需, 使蒙受, 使承担, 遗传给
Erratic (不稳定的，古怪的) = irregular
Even= already
Evenly = equally (evenly adv.均匀地, 平坦地 )
exhibit (n. v. 展示，陈列)= feature (展出、公开 = emphasize， display, publicize, ) （句中选）
Expanse (笔试：expand = increase)
express = communicate
Extraneous ( 无关紧要的，外来的，inessential, from outside)
expressed--communicated
some concerns about forest are expressed till early 1900. expressed- A.communicated, B.increased. exhibit--feature（句中选）
endangered<-->abundant（反义词，句中选）
entail----involve
enrich(enhance,enlarge,conceal，根据上下文有可能选conceal,我选enhance)，
explored,
earnest
establishment--formation
enclosure--surrounding
ease
era--period
enormous--凶暴的，巨大的
enhance --improve or enlarge
elaborate adj.精心制作的, 详细阐述的, 精细 vt.精心制作, 详细阐述 v.详细描述
embedded--encased
essentially adv.本质上, 本来
even--already 恰好，正当
词汇不难,其中有even--already题.在But, even by the end of时间...,.....
expendable -- unprofitable
expose to--subject to
exert--cause
expanse--area
expanse == (笔试：expand = increase)
这一题 expanse 是考“n.区域”的意思