Main Sections The main part of this textbook is divided into four sections reflect-ing the tour parts of the exam: Reading, Listening, Speaking, and Writing, Each of these four parts consists of the following: | 172 Section 1 Guide to Reading Answer Choices Luther Burbank A. Because of his techniques made it difficult for researchers who wanted o continue his work B. Worked more in the field than in the laboratory C. Created alternatives to cotton growing D. Was jealous and resentful of the other s success E. Focused on creating new types of plants George Washington F. Kept careful notes about his experiments Carver G. Worked mainly from instinct H. Concentrated primarily on finding new uses for familiar plants 1. Invented peanut butter Passage 4 Fog is a cloud in contact with or just above the surface of the land or the sea. Fog consists of particles of water or ice suspended in the air. It can be a major environmental hazard. Fog on busy highways can cause chain-reaction accidents involving dozens or sometimes even hundreds of cars. Delays and shutdowns at airports can cause economic losses for airlines and inconvenience thousands of travelers. Fog at sea has always been a danger to navigation. Today with supertankers carrying vast quantities of oil fog increases the possibility of catastrophic oil spills. Even though planes and ships are equipped with radar that can see through fog accidents are still more common in foggy weather than on clear days. Radiation fog the type of fog most often seen around the world forms on clear nights when moist air near the ground loses warmth through radiation. This type of fog often occurs in valleys such as California s San Joaquin Valley and then spreads outward from the valleys. It is most common in the autumn. Another common type advection fog results from the movement of warm wet air over cold ground. It is most common during winter warm-ups and spring thaws. This type of fog occurs along ocean coasts and along the shores of large lakes. It generally forms at night when the wind is blowing lightly. If the wind blows too hard it will break the fog up. Advection fogs also form when air associated with a warm ocean current flows .
