Why did the Austrian man place the diamond ring on the third finger of the left hand of his would-be wife（）
A. He wanted to follow the tradition of his country.
B. He believed that it symbolized an everlasting marriage.
C. It was thought a blood vessel in that finger led directly to the heart.
D. It was supposed that the diamond on that finger would bring good luck.
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B型题 淀粉（）
A. 撒于水面
B. 浸泡、加热、搅拌
C. 溶于冷水
D. 加热至60～70℃
E. 水、醇中均溶解
Passage One Questions 11 to 13 are based on the passage you have just heard. What will be used to power cars in the next few decades（）
A. Synthetic fuel.
B. Solar energy.
C. Alcohol.
D. Electricity.
Section A What does the man suggest the woman do（）
A. Give the ring to a policeman.
B. Wait for the owner of the ring in the rest mom.
C. Hand in the ring to the security office.
D. Take the ring to the administration building.
病历摘要：男性，30岁。主诉：右视力下降1个半月，自觉右眼前有黑影，视物发暗变形，无眼红、眼痛史。三年前左眼曾有同样情况，经治疗约一年视力有恢复。最近患者工作紧张。检查：视力右4.6（0.4)，左4.9（0.8)。双外眼未见异常。屈光间质清晰。小瞳眼底检查：双眼视乳头正常，视网膜动脉稍细，静脉正常，右眼黄斑部稍隆起，有黄白色点状物，左眼黄斑部色素紊乱、中心凹光反射暗淡。 提问：本病应与哪些病进行鉴别诊断？（）
A. 老年黄斑变性
B. 视盘血管炎
C. Stargardt黄斑变性
D. 黄斑囊样水肿
E. 球后视神经炎
F. 原发性视网膜脱离
G. 视网膜色素变性
H. 视网膜静脉周围炎
I. 视网膜中央静脉阻塞
J. 视网膜劈裂症
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