新编四级听力练习 第232期

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Passage Two
29.
A. Cooking.
B. Cleaning.
C. Sink care.
D. Painting.
30.
A. 50%.
B. 40%.
C. 30%.
C. 20%.
31.
A. How to release oil from seeds.
B. How to test the local market for oil.
C. Food and oil.
D. Soybean and oil.