billions of cells c. a complex organization a communication network

LISTENING 35 OTHER QUESTION TYPES ON THE COMPUTER TEST Most of the questions on the computer-based test are traditional multiple choice, but some are types that can only be used on a computer. If you are taking the computer-based TOEFL exam, become familiar with these question types: ■ Questions with more than one answer. You will select two of four possible answer choices. Here is an example: Acid rain looks, feels, even tastes like clean rainwater, but it actually contains high levels of pollutants. Although natural sources like gases from forest fires can be part of the problem, the burning of fossil fuels, such as car exhaust and smoke from factories, is the main cause of acid rain. This how it works: pol- lutants mix in the atmosphere to form fine particles that can be carried long distances by wind. Eventually, they return to the ground in the form of rain or other precipitation. Acid rain has caused widespread damage in eastern North America, Europe, Japan, China, and Southeast Asia. Question: Based on the lecture, which of the following can cause acid rain? [Click on two answers.] a. contaminated drinking water

b. natural sources c. man-made pollutants

d. rain

Answer: b and c. ■ Questions that use visual information. You will select an image or part of an image for your answer. 36 TOEFL EXAM ESSENTIALS Question: Choose the map that best represents the areas negatively affected by acid rain. [Click on a map.] Answer: You would choose a map that highlights eastern North America, Europe, Japan, China, and Southeast Asia. ■ Sequence questions. You will put information or events into order so that they form a process. Question: Summarize what happens to acid-rain pollutants by placing the stages in the proper order. [Click on a word. Then click on the space below where it belongs. Use each word only once.] form fine particles carried by wind mix in atmosphere return to ground in rain 1. _____________________________________________ 2. _____________________________________________ 3. _____________________________________________ 4. _____________________________________________ Answer: 1. mix in atmosphere; 2. form fine particles; 3. carried by wind; 4. return to ground in rain. ■ Matching questions. You will match up or pair images, words, or phrases.