The loss of perishable goods in transit means lost revenue. However, a number of

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问题 The loss of perishable goods in transit means lost revenue. However, a number of technologies and new solutions can take the fear out of shipping perishable goods such as seafood products and meat. A team of scientists has developed a color indicating label, which______the freshness of meat and seafood products.
This battery-powered label uses a special sensor which includes chemical materials ______to the inside of the plastic wrap. This reacts with the gas levels in the package, which changes depending on the freshness of the food.
The freshness of the food inside can ______ without opening the food package by using special sensors that look like bar-code reader. [br]

选项 A、monitors
B、breathes
C、reserves
D、tastes

答案 A

解析词汇：动词词汇1．这是一道词汇题，选项均为动词。2．空格前的先行词是a color indicating label(颜色指示标签)，通过传感器可监测食物的新鲜度，因此(A)为正确选项。

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