第26题: [单项选择]Individuals may at various points in their lives experience discrimination in the allocation of resources either ______ of being too old or too young. A. at the risk B. to the point C. in the case D. on the ground 参考答案:D 答案解析:[解析] 本题是说个人在不同阶段都要经历或因年龄太大或因年龄太小而带来的资源的分配不公;D项“on the ground (of) 根据,以……为理由”符合题意。其他三项“at the risk (o
第27题: [单项选择]在胚胎处于哪一期受到照射,可造成器官畸形 A. 着床前 B. 胎儿 C. 胚胎 D. 器官形成 E. 植入前 参考答案:D 答案解析:在胚胎处于器官形成期受到照射,可造成器官畸形。