第12题

CLOZE

Fill in each of the 15 blanks in the passage with the most likely answer. 

     People build many different kinds of shelter throughout the world. The types of shelters they erect depend （1） on the climate and on what building materials are （2）.

     In hot areas, the weather is warm enough for people to live （3） much of the time. But they still need protection （4） sun, rain, and insects. Houses there have many screened windows, doors, and other openings that let in breezes but keep out insect pests. In the cool regions, houses are （5） to keep out the cold and keep in heat. Many buildings have thick walls to （6） heat loss. In such snowy countries as Norway and Sweden, people build houses with sloping roofs （7） snow will slide off easily.

     Building methods and materials （8） widely throughout the world. In regions with large forests, many people use wood to build homes. （9） is easy to build with, but most wooden buildings are less sturdy than those made of stone or concrete.

     In areas with little （10）, people construct many shelters of clay or mud. In Mexico and the southwestern United States, for example, people （11） clay and dirt or mud with water to make adobe (砖坯). In wet tropical areas, （12） causes wood shelters to rot within a few years. People in these areas build houses from other materials. For example, in some parts of Africa and on many Pacific islands, people weave the （13） of tall grass into houses.
     High-rise buildings made of steel and concrete are most common in such industrial countries as the United States and Canada. Prefabricated buildings （14） parts manufactured at a factory and then shipped to the construction （15）. There construction workers assemble the parts. Many prefabricated shelters use large amounts of plastic and other lightweight materials.

第12题
A、moisture
B、erosion
C、rust
D、drought
【正确答案】：A
【题目解析】：在潮湿的热带地区，湿气导致木材庇护所在几年内腐烂。moisture：水气；湿气；erosion：侵蚀，风化；rust：生锈，荒废；drought：旱灾，A选项符合题意。