1.reasoning n．推理，論證(argument)；a．推理的(the use of reason)
詞根記憶：來自reason(n．理由：理性：v.說服；推論)
例：This confirms the alternative view that intuition is actually more effective than careful, methodical reasoning.
派生詞：reasoningly( ad.理性地：推論地)
同根詞：reasonable(a．合理的：公道的)

2.rebut v.反駁(to refute)
詞根記憶：re(反)+but(=butt頂撞)——反頂撞——反駁
例：The scientist rebutted the cigarette company's claims.
派生詞：rebuttal(n．反駁，反證)

3.recall v.回憶(to remember)；n．收回(a public call by a manufacturer for the return of a product that may be defective)
詞根記憶：re（重新）+call(叫，召集)——重新叫一遍，收集一遍——回收
例：Randomly generated passwords are difficult for employees to recall.//Although one link in the chain was weak, it's not sufficiently so to require the recall of the automobile.

4.receipt v．收據(a piece of paper as proof of receiving of goods or money); [pl.]收入(sth. received)
詞根記憶：re+ceipt(看作cept拿，取)——拿到的，取到的——收入
例：gross receipts總收入

5.reception n.（無線電、電視等的）接收效果(the receiving of a radio or television broadcast)
例：For locations with poor television reception, cable televisions are recommended.

6.receptive a．(to)（愿意）接受的( inclined to receive)
詞根記憶：re+cept(拿，取)+ive——愿意拿的——接受的
例：Jane was receptive to changes in her work schedule.
派生詞：receptivity(n．接受能力)

7.receptor n.感（接）受器(receiver)；受體(sense organ)
詞根記憶：re+cept(拿，取)+or——被拿的——受體，主要用于生物學領域
例：The milk of many mammals contains substances that are known to stimulate certain receptors in the brain.

8.recession n.衰退，蕭條（時期）（a period of reduced economic activity）
詞根記憶：re(反)+cess(走)+ion——反著走——衰退
例：It's impossible to decrease inflation without causing a recession and its concomitant increase in unemployment.

9.recipe n．食譜(a set of instructions for making something from various ingredients)
聯想記憶：re+cipe(抓)——從飯里抓出的精華——食譜
例：There are a lot of delicious recipes in this cookbook.