单项选择题

Legally, the term refers to "any substance, with intended use, which results or may reasonably be expected to result—directly or indirectly—from its becoming a component or otherwise affecting the characteristics of any food" . This definition includes any substance used in the production, processing, treatment, packaging, transportation or storage of food.（）

A. intended
B. from
C. otherwise affecting
D. treatment

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单项选择题

In addition, findings reveal that males receive more teacher attention than females, boys receive more specific comments about their academic performance, that there are differences favoring males in task assignment, in teacher’s expectation of student’s behavior based on gender, as well as in such areas as overall curriculum design, classroom activities, and educational tracking (particularly in math, science, vocational courses, and extracurricular activities).（）

A. that there are differences
B. favoring males
C. teacher’s expectation of student’s behavior
D. and extracurricular activities

单项选择题

A high life expectancy coupled with a high crude birthrate makes it difficult to increase per capita GNP. Finally, people have different views on what is the proper rate of population. Some feel that the earth is too crowded already and that societies should work for zero population growth—the condition in which the average number of births and deaths balances so that a population stops growing.（）

A. makes it difficult
B. what
C. that
D. balances

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