☆artificial
synthetic, fabricated, contrived, fake, mock, bogus, counterfeit, pseudo
☆conventional
traditional, historical, past; accepted, common, regular, routine, mainstream, ordinary
☆demand
request, claim, need, order, require, call for
☆decline
decrease, degeneration, drop, fall, recession, depression, reduction, slump, worsening
☆develop
evolve, advance, grow, improve, progress, flourish
☆difficulty
handicap, hardship, adversity, challenge, complication, dilemma, perplexity, plight, trouble
☆early
first, old, ancient, primitive, previous, former, remote
☆find
discover, come across, encounter, hit on, expose, notice, note, observe, recognize, spot, uncover
☆future
what's next, prospect, approaching, expected, destined, forthcoming
☆how
describe, operate, explain, clarify, demonstrate, eludicate, expound, illustrate, interpret, account for
☆inevitable
unavoidable, certain, destined, fated, inescapable, sure
☆militant
armed, belligerent, army, weapon, warlike
☆objection
commercial challenge, complaint, disapproval, opposition, protest, query, question, remonstration
☆obstacle
bar, barricade, barrier, block, blockage, check, obstruction, problem, snag, hurdle
☆prevalent
common, usual, prevailing, widespread, systematic, collective, general, popular
☆reduce
curtail, cut, decrease, halve, impair, lessen, moderate, trim, slash
☆role
function (provide, support, weaken, smooth, solve), job, position, duty, post, task, contribution
☆recent
modern, current, now, nowadays, today, contemporaneous, new, novel, present, up-to-date (来源：最老牌的英语学习网站 http://www.EnglishCN.com)
☆simulate
virtual, create, reproduce, pretend, imitate
☆significance
importance, milestone, impact, justification, gist, implication, point, purport, vital business, economic, financial, mercantile, profitable, pecuniary
☆worldwide
international, cosmopolitan, global, universal, ubiquitous, widespread, around the world

解决：solve, resolve, deal with, cope with, handle, tackle
消除：get rid of, eradicate, eliminate
依赖：rely on, depend on, count on
十分：very much, immensely, hugely, largely, greatly, enormously, tremendously
损害：damage, hurt, injure, harm, impair
给予：give, offer, render, impart, provide
发展：develop, cultivate, foster
优势：advantage, merit, virtue, benefit, upside, strength
缺陷：disadvantage, detect, demerit, drawback, downside, weakness