The following paragraph is a summary of the talk given by the speaker. Listen to it a couple of times and then write the letter of the corresponding word in each sentence. Click to start listening. (2.4MB)

a. perfume      b. health
c. tonic           d. infection

A liquid from the bear's gallbladder is used to make a (1) drink. It is actually bile that is used in the (2) . Bears usually die from (3) sooner or later. Traders have recently turned to the North American bear for bile. The oil produced by the male deer attracts the opposite sex. The oil is used in (4) , soap, and shampoo, as well as to make medicine. There are currently between 400,000 and 800,000 musk deer in Asia. The oil sells for up to $ 360,000 per kilogram.

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