1. [詞根辨異] cad的異體cid1（=to fall or befall）與cid2（=to cut）同形，請判斷下列單詞的詞根是哪一個。
accident decidable decidable excide coincide
deciduous microbicide occident homicide
2. [詞海垂釣]從詞典中“釣”出一串同根詞吧。
circum-（=around）
3. [詞義判斷]-cide作為后輟，可以與許多外來語詞根或詞干結合。試判斷下列單詞的詞義或詞根的含義。
tyrannicide matricide fratricide insecticide
vermicide parasiticide fungicide
4. [望文生義]根據已學詞綴和詞根的知識推測下列單詞的含義。
① undecided a.
② indecision n.
③ indecisive a.
5. [尋根問底]指出下列單詞的詞根并領會其詞義的由來。
① incisor n.切牙；門牙
② precisian n.嚴守規(guī)則者；清教徒
16. claim, clam [L]=to call out喊
claim和clam都源于拉丁動詞clamare，意為to call out或to shout（喊叫）。claim是不定式詞干在英語中的重讀形式，用來構成動詞；clam是動名詞詞干，只出現(xiàn)于相應的名詞和形容詞中。
claim [claim=to call out呼喊→“to speak loudly for one's own interest為自己的利益而呼喊”→] v. demand as one's due or property要求；索取：We have claimed compensation for the losses from the foreign company.我們已向外國公司提出索賠要求。
▽claimer [claim;-er n.] n.根據權利提出要求者
claimable [claim;-able a.] a.可要求的；可認領的
disclaim [dis-=to undo做相反之事；claim v. 要求，索取→“to undo that of claiming做與要求或索取相反的事”→] v. deny;disavow否認；抵賴：He disclaimed his responsibility for the accident.他否認自己對事故負有責任。
▽disclaimer [disclaim;-er n.] n.否認者
declaim [de-=completely完全地；claim=to call out叫喊→“to call out or speak loudly喊話；大聲說話”→] v. give a formal speech演講：The candidates declaimed against the government. 競選人發(fā)表演說責難政府。
▽declaimer [declaim;-er n.] n.演講者；朗誦者
declamation [declaim的對應名詞：declam=to declaim演講；-ation n.=the act表行為→] n.① the act or art of declaiming演講；雄辯術②formal speech正式演說：to deliver a long declamation發(fā)表長篇演說
declamatory [declaim的對應形容詞：declam=to declaim演說；-atory a.=characterized by有……特點的→] a.① characterized by declaiming演說的②bombastic夸夸其談的：long and declamatory speech夸夸其談的長篇大論
exclaim [ex-=out出；claim=to call or shout喊→“to call or shout out喊出來”→] v. cry out suddenly from pain, anger, surprise, etc.驚叫；驚嘆：“Help! Help!”she exclaimed.她大聲驚叫：“快來人呀！救命呀！”
▽exclamation [ex-;clam;-ation n.] n.呼喊；驚嘆
proclaim [pro-=forward向前；claim=to cry out呼喊→“to call or speak forward（before the public）向前面的公眾講話”→] v. make known before the public;declare or announce officially宣布；公告：to proclaim a new law公布一項新法令
▽proclamation [pro-;clam;-ation n.] n.宣布；公告
reclaim [re-=back回；claim=to call呼喚→“to call back (from vice, error, savagery or waste condition) (從罪惡、錯誤或荒廢狀態(tài))召喚回來”→] v. ① reform;civilize改造；感化：We reclaimed him from vice.我們使他改惡從善。② bring under cultivation墾荒：to reclaim fields from wasteland開荒造田
▽reclaimable [reclaim;-able a.] a.可改造的；可開墾的
reclaimant [reclaim;-ant n.] n.開墾者；糾正者
reclamation [re-;clam;-ation n.] n.開墾；感化
acclaim [ac-(ad-)=to對；claim=to call out呼喊→“to call out cheerfully to somebody高興地向某人呼喊”→] v. hail or praise publicly歡呼；稱贊：His play was acclaimed as a masterpiece.他的劇本被贊許為杰作。
▽acclamation [ac-;clam;-ation n.] n.歡呼；稱贊
clamour [clam=to shout叫喊；-our n.=the state表狀態(tài)→“the state of shouting叫喊的狀態(tài)”→] n.① shout or outcry for demand, appeal, etc.叫喊；呼聲：A clamour of protest went up from the masses.群眾發(fā)出了抗議的呼聲。②noise made by shouting吵鬧聲，喧嚷：The clamour of the traffic gave me a headache.車馬喧鬧，叫人頭痛。
