Please be careful when you are drinking coffee in case you smudge the new carpet.
A. crash
B. pollute
C. spot
D. stain
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When people become unemployed, it is loafing often worse than lack of wages.
A. laziness
B. poverty
C. idleness
D. inability
猪肠清洗加工的第一步应该是______。
A. 灌水冲洗
B. 热水烫洗
C. 刮剥洗涤
D. 碱水漂洗
肾的基本功能单位是()
A. 肾小球
B. 肾单位
C. 肾实质
D. 肾小管
E. 肾小囊
先天性内眦赘皮理想的手术矫正时间是()
A. 6岁
B. 7岁
C. 8岁
D. 9岁
E. 10岁以亡