C级核心词汇推荐：circumstance n. 环境；境况(circumstances – environment - setting – surrounding 环境, 情况 ); (in [under] the circumstances/在这种情况下); citizen n. 市民；公民; ...
C级核心词汇推荐：comprise v. 包含，由……组成; (comprise – include - contain– be composed of – consist of – be made up of包含，由……组成)concentrate v. 集中，浓缩 concentrate one...
C级核心词汇推荐colleague n. 同事(colleage – partner同事, 合作者)，同僚；collect v. 收集；聚集；(collect – gather – assemble聚集)college n. 学院；大学；学会； color n. <美>(=colour)...
C级核心词汇推荐:continent n. 大陆，陆地; continue v. 继续，连续，延伸(continue doing sth/持续做某事)continuous adj.连续的, 持续的 (continuous – constant – lasting 连续的)；contract n. 合...
C级核心词汇推荐:credit n. 信任，信用，荣誉（give credit to/相信；信任；称赞， credit card 信用卡）； crime n. 犯罪，罪行，罪恶（commit a crime/犯罪）； criminal n. 罪犯adj. 犯罪的，犯法的(criminal - ill...
1. All living organisms, regardless of their unique identity, have certain biological, chemical, and physical characteristics in common. A) as a resul...
1.The old concerns lose importance and some of them vanish altogether.A. develop B. disappearC . linger D. renew2. In the United States educational sy...
1. Loud noises can be annoying. A) hateful B) painful C) horrifying D) irritating 2. Human facial expressions differ from those of animals in the degr...
1． America's emphasis on the importance of education for everyone has spurred scientific research. A) encouraged B) endangered C) endorsed D) enla...
1. Even in a highly modernized country, manual work is still needed. A) expressive B) physical C) exaggerated D) dubious2. Techniques to harness the e...