第12题: [单项选择]People like beautiful things, but the beautiful ______ not always the useful. A. is B. are C. was D. were 参考答案:C 答案解析:the+形容词/-ing形式/过去分词(表示一类人或事物)做主语时,谓语动词常用复数,但表示一种抽象概念或品质时,谓语动词常用单数。题中the beautiful is not always the
第31题: [单项选择]Only recently ______ possible to separate the components of fragrant substances and to determine their chemical composition. A. it becomes B. having become C. has it become D. which becomes 参考答案:A
第35题: [单项选择](1~3题共用题干)
男性患儿,7岁;无意中发现右上腹肿块,光滑;呈大结节状,无压痛;Bp130/90mmHg;血红蛋白90g/L;血生化及电解质均正常。家长曾2次发现肿块明显小于平常所见。最合适的治疗方案为 A. 囊肿内引流术 B. 囊肿切除+内部引流术 C. 离断式肾盂输尿管成形术 D. 单纯囊肿切除术 E. 暂观察,定期复查B超 参考答案:C