We drink more milk, eat more cream, cheese, butter than ever before. To meet and profit by this (61) demand for milk, dairy farmers have increased the (62) of their herds, they have (63) their grasslands more skillfully and have improved the quality of their stock. The average (64) of a cow in 1938 was 560 gallons at each lactation (哺乳期). Today it is well (65) 800 gallons.
The (66) of food given to a milking cow is (67) according to its weight and its yield. Sufficient energy, protein, minerals and vitamins must be fed to (68) the cow in good health and to replace (69) it loses in milk. A (70) supply of drinking water is essential. A cow will drink at (71) ten gallons a day and a (72) milker in hot weather may need as (73) as twenty-five gallons.
Cows are usually milked twice a day, early in the morning (74) in the late afternoon. Machine (75) is almost adopted
A. working
B. milking
C. monitoring
D. producing
We drink more milk, eat more cream, cheese, butter than ever before. To meet and profit by this (61) demand for milk, dairy farmers have increased the (62) of their herds, they have (63) their grasslands more skillfully and have improved the quality of their stock. The average (64) of a cow in 1938 was 560 gallons at each lactation (哺乳期). Today it is well (65) 800 gallons.
The (66) of food given to a milking cow is (67) according to its weight and its yield. Sufficient energy, protein, minerals and vitamins must be fed to (68) the cow in good health and to replace (69) it loses in milk. A (70) supply of drinking water is essential. A cow will drink at (71) ten gallons a day and a (72) milker in hot weather may need as (73) as twenty-five gallons.
Cows are usually milked twice a day, early in the morning (74) in the late afternoon. Machine (75) is almost adopted
A. various
B. varying
C. varied
D. variant
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