第29题: [单项选择]All the references she has obtained for her doctoral dissertation ______ about twenty items. A. make up for B. add up to C. come up with D. put up with 参考答案:B 答案解析:[解析] 本句空格处意为“总计约有20项”。add up to意为总计达,如;This movie adds up to a lot of tears.(这部电影赚了不少眼泪。)其他三项“make u
第30题: [单项选择]为确诊肿块性质最好采用 A. 红外线摄影 B. 钼靶X线摄影 C. 穿刺活检 D. 切除活检 E. 切取活检 参考答案:D