题目

现在人们看到的菊花有许多品种，是由于     A．自然选择     B．人工选择         C．偶然选择     D．随机选择 答案：B Earthquake Intensity & Observed Effects（强度与现象） I.       Felt by only a few people under very special conditions. II. Felt by only a few people at rest, especially on the upper floors of buildings. III. Felt noticeably indoors, especially on upper floors of buildings. IV. Felt indoors by many people, outdoors by a few; some awaked. V.    Felt by nearly everyone; many awaked; dishes and windows break; plaster (灰泥) cracks (开裂). VI. Felt by everyone; many frightened and run outdoors; heavy furniture such as tables and shelves moves. VII.   Everyone runs outdoors; small to moderate (中等的) damage(损毁) in usual buildings. VIII. Considerable (相当大的) damage in usual buildings; monuments(碑) fall. IX.    Considerable damage in all buildings; ground cracks; underground pipes (管道) break. X.      Most buildings damaged; rails bend(弯曲); landslides (山崩) take place; water splashes(溅落) over banks. XI.    Few buildings left standing; bridges damaged; wide cracks in the ground; underground pipes break. XII.   Damage total; waves seen on ground; objects thrown into air. 1.According to the picture, what is the possible position of the earthquake’s epicenter? A. 36°N, 90°W.         B. 36°N, 90°E.  C. 90°N, 36°W.    D.90°N, 36°E. 2.What is the effects of earthquake intensity IV? A. Everyone runs outdoors. B. Only a few people feel it. C. Many people who stay indoors feel it. D. Felt by people on the upper floors of buildings. 3.According to the picture, which city would have announced the report: “Nearly everyone felt the earthquake, and many people were awaked. Dishes and windows were broken”? A. Cincinnati.            B. Louisville.              C. Pittsburgh.  D. Nashville. 4.Which statement best describes the earthquake intensity at Boston? A. Felt indoors by few people under very special conditions. B. Few buildings left standing. C. Felt noticeably indoors, especially on upper floors of buildings. D. Felt indoors by many people, outdoors by a few, some awaked. 5.For which city was the description of an earthquake “Heavy furniture moved, everyone  felt it, and many were frightened and ran outdoors” reported? A. Nashville.     B. Louisville.            C. Syracuse.    D. Cincinnati.