1.extract v.提取，榨取(to withdraw, usu.a juice, by physical or chemical process)

词根记忆：ex(出)+tract(拉)--拉出--提取，榨取

例：A special process extracts the ink from the recycled newspapers.

派生词:extracted（a．萃取的）

2.extraction n.取出，抽出(the act or process of extracting sth.)；抽出物（sth. extracted）

词根记忆：来自extract（v.提取，榨取）

例：mineral ext.action矿物提炼

同根词：protract(v.延长)

3.extracurricular a．课外的（not falling within the scope of a regular curriculum)

词根记忆：extra(额外的)+curricular(课程的)--课外的

例：extracurricular acttivities课外活动

4.extraneous a．无关的(having no relevance)；外来的(extrinsic)

词根记忆：extran(外面)+eous--外来的

例：The digitized signal has been processed by a computer to remove the extraneous sound(杂音)//extraneous force外力

5.extraordinarry a．非凡的，特别的(going beyond what is usual, regular, or customar3t);离奇的(exceptional to a very marked extent)

词根记忆：extra(以外的)+ordinary(平常的)一平常之外的一非凡的

例：Never before in the histor3t of music have musical superstars been able to command such ext.aordinary fees of the kind they do today,

派生词:extraordinarily(ad.格外地；非凡地)

6.extrapolation n.推断，推知(inference)

词根记忆：extra(外面)+pol(放)+ation--放出想法--推断，推知

例：He estimates his income tax bill by extrapolation from figures submitted in previous years.

同根词：interpolate(v.插入;窜改)

7.extraterrestrial a．地球外的(originating, existing, or occurring outside the earth or its atmosphere)

词根记忆：extra(外面)+terr(陆地)+estrial一陆地外面的一地球外的

例：The government pledged a $100 million investment in the search for extraterrestrial intelligence.

8.extreme n.极端（的事物）(something situated at or marking one end or the other of a range);a．极度的，极端的(excessive)

例：Clark refutes the extremes of the constructMsts by both theoretical and empirical arguments//Over half the population of Bahlton lives in extreme poverty.

9.fabric n.织物(cloth)；构造(structure)

词根记忆：fabr(制作)+ic--制作出来的东西--构造；织物

例：My shirt is made of cotton fabric.//American Indian poetry is always fully woven into 'the fabric of ordinary life.

派生词：fabrication(n.捏造的东西)

10.facial a．面孔的；面部的(of or relating to the face)

词根记忆：fac(面)+ial--面孔的

例：facial expressions西部表情