患者，女，38岁，心脏超声检查示左房内稍强回声光团有一细蒂连于房间隔，舒张期脱入二尖瓣口，收缩期返回左房，考虑为
A. 血栓
B. 赘生物
C. 二尖瓣狭窄
D. 黏液瘤
E. 以上都不是
肝脏分叶不正确的是
A. 正中裂将肝分为左、右半肝
B. 左肝静脉将肝分为左内、左外叶
C. 右肝静脉将肝分为右前、右后叶
D. 中肝静脉将肝分为右前、右后叶
E. 胆囊与下腔静脉左侧缘连线将肝分为左、右半肝
The word "plagiarize" (Line 4, Para. 5) most probably meas "______". A) steal and use C) make public B) give reward to D) take and change
A. The word "plagiarize" (Line 4, Para. 5) most probably meas "______".
B. steal and use
C. give reward to
D. make public
E. take and change
From the passage we learn that ______.
A. an invention will not benefit the inventor unless it is reduced to commerical practice
B. products are actually inventions which were made a long time ago
C. it is much cheaper to buy an old patent than a new one
D. patent experts often recommend. patents to others by conducing a search through dead patents
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