单选题 Investigator: XYZ Coins has misled its clients by promoting some coins as "extremely rare" when in fact those coins are relatively common and readily available. XYZ agent: That is ridiculous. XYZ Coins is one of the largest coin dealers in the world. We authenticate the coins we sell through a nationally recognized firm and operate a licensed coin dealership.
The XYZ agent's reply is most vulnerable to the criticism that it

A、 exaggerates the investigator's claims in order to make them appear absurd.
B、 accuses the investigator of bias but presents no evidence to support that accusation.
C、 fails to establish that other coin dealers do not also authenticate the coins those dealers sell.
D、 lists strengths of XYZ Coins while failing to address the investigator's charge.
E、 (E) provides no definition for the inherently vague phrase "extremely rare. "

【正确答案】 D

【答案解析】[解析] 本题比较简单，请思考本题对话的特点及选项(D)正确的原因。
注：authenticate υ. 证实(某物)真实，合理[prove(sth.)to be valid or genuine or true]
dealership n. 代理权，分销商
bias n. 某人提到一事物两方面，但偏袒于某一方面
contradiction n. 提到两方面，且两方面互斥
address υ. 对……进一步论述