Section BDirections: In this section, you will hear 3 short passages. At the end of each p

Section B

Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.

听力原文： During the summer you should be even more careful than usual of the food you prepare. Food spoils faster in hot weather than in cold weather. When you are shopping, purchase frozen and refrigerated foods at last. Don't make long stops on the way home, because frozen foods could become soft or warm. Using insulated bags helps keep food cold until you can get home. Milk and milk products should be refrigerated immediately. When camping or picnicking, or at any time [27]when refrigeration isn't available, use special dry food. Don't leave foods in a hot car or beach bag. Picnic favorites like meat, chicken, and egg salad should be kept in a cooler. Above all, if a food doesn't seem to be normal in odor or appearance, [28]discard it immediately. Don't taste it.

(27)

A．The advantage of refrigeration.

B．Food preservation in the summer.

C．Cooking food in the summer.

D．Fun in the summer.