My mother-in-law (who is in her 60s) insists that it be proper etiquette for men to stand up whenever a woman gets up from or returns to the table.
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______forms a natural boundary between Mexico and the United States.
A. The Rio Grande River
B. The Mississippi River
C. The Colorado River
D. The Gulf of Mexico
The best title for the passage is
A. Mr. Obama"s Dilemma.
B. University Challenge.
C. The Rising Cost.
D. Anger about College.
The italicized "students feel short-changed by professors" (Para. 5) probably means
A. students worry about what professors do research on.
B. students feel it doesn"t pay to study at university.
C. students are obsessed with too much research.
D. students suffer from different mental problems.
进行禁水一加压试验后，尿比重可达1．020，应考虑下列哪项诊断
A. 精神性烦渴
B. 垂体性(中枢性)尿崩症
C. 肾性尿崩症
D. 肾小管性酸中毒
E. 糖尿病
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