1. [詞根辨識]分析下列單詞，指出其中dem（人民）的派生詞。（提示：注意區(qū)分前綴de-跟mo開頭的詞干結(jié)合的單詞與詞根demo的派生詞。）
demolish demoralize demobilize
demonstration democratically demote
2. [望文生義]根據(jù)所學詞根的知識推測下列單詞的詞義。
① undemocratic a.
② democratization n.
3. [尋根問底]指出下列單詞的詞根并領(lǐng)會其詞義的由來。
① epidemiology n.流行病學
② epidemiologist n.流行病學家
26. dic, dict [L]=to say說
詞根dic是拉丁動詞dicere的不定式詞干；dict是動名詞詞干，意思都相當于to say（說）。在英語中，dic的派生詞較少，dict的派生能力卻很強。
indicate [in-=towards對；dic=to say說；-ate v.→“to say towards some-thing針對某事說話”→] v.① point out;make known指出；表明：The arrow indicates the direction of advance. 箭頭指出前進方向。② show;suggest表示；暗示：High fever indicates severe illnesss.高燒表示病重。
▽indication [indicat(e);-ion n.] n.指示；象征
indicator [indicat(e);-or n.] n.指示者；指示器
indicative [indicat(e);-ive a.] a.指示的；象征的；陳述的
dictate [dict=to say說→saying話；-ate v.=to do做→“to do a saying做一次講話”→] v.①say or read for another to write口述，使聽寫：He dictated a letter to the typist.他向打字員口授一封信。②say commands命令，支配：He will not be dictated to you.他不會聽命于你的。
▽dictation [dictat(e);-ion n.] n.口述；聽寫
dictator [dictate(e) v.命令；-or n.=person人→“person who dictates laws, commands, etc.發(fā)布法令者”→] n. absolute ruler獨裁者，專政者：fascist dictators法西斯獨裁者
▽dictatorship [dictator;-ship n.] n.獨裁；專政
dictatorial [dictator;-ial a.] a.獨裁的；專政的
diction [dict=to say說話；-ion n.=the manner表行為方式→“the manner or art of saying說話的方式或藝術(shù)”→] n. choice of words and phrases in speaking措詞，辭令：Bad diction marred the effectiveness of his speech.措詞不當削弱了他講話的效果。
dictionary [diction n. 措詞；-ary n.=thing物→“book for diction措詞用書”→] n. book explaining the use of words in a language詞典，字典：an English-Chinese dictionary英漢詞典
contradict [contra-=against 對抗；dict=to say 說→“to say against 以言相抗”→] v.① speak against反駁：Students may contradict their teachers.學生可以反駁教師。② deny否認：Don't contradict what you just testified.別否認你剛剛證實的東西。③ hold the opposite of同……矛盾：to contradict oneself自相矛盾
▽contradiction [contradict;-ion n.] n.矛盾
contradictory [contradict;-ory a.] a.矛盾的；對立的
dictum [dict=to say說；-um n.=thing done所做的事→“something said有人說過的話”→] n. saying;authoritative saying名言；格言：There is an old dictum that blood is thicker than water.古話說，血濃于水。
edict [e-（ex-）=out from 自……而出；dict=to say說→saying 話→“saying out from（the authorities）（當權(quán)者）發(fā)出的話”→] n. order issued by authority法令：the king's edict國王的命令
▽edictal [edict;-al a.] a.法令的
predict [pre-=beforehand事先；dict=to say說→“to say beforehand事先說出”→] v. say what will happen in the future;foretell預言；預告：The weather forecasting center predicted rain for tomorrow.氣象站預告明天有雨。
▽prediction [predict;-ion n.] n.預言；預告
predictive [predict;-ive a.] a.預兆的
benediction [bene=good好；dict=to speak說；-ion n.=-ing表行為→“good speaking說好話”→] n. blessing祝福：sincere benediction誠心的祝福
▽benedictive [bene;dict;-ive a.] a.祝福的
malediction [male=ill, evil壞，惡；dict=to speak說；-ion n.=-ing表行為→] n. evil-speaking;curse誹謗；咒罵：irresponsible malediction不負責任的誹謗
▽maledictive [male;dict;-ive a.] a.誹謗的；咒罵的
