2. 外语
  3. The loss of perishable goods in transit means lost revenue. However, a number of technologies and new solutions can take the fea

The loss of perishable goods in transit means lost revenue. However, a number of technologies and new solutions can take the fea

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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.
选项 A、determine
B、be determining
C、determiner
D、be determined
答案D
解析 语法：被动语态1．原文提到决定新鲜度的因素，应使用被动语态，因此主动语态的A选项和B选项排除。2．C选项determiner是名词，不能出现在助动词后，be determined为被动语态，因此(D)为正确选项。
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