A. the volunteers do B. because she does not have a weight problem C. because the life there can be very boring D. make people o

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问题 A. the volunteers do
B. because she does not have a weight problem
C. because the life there can be very boring
D. make people overeat
E. because she was her own boss
F. after passing a high-protein test
Volunteers have to get prepared for the time in the calorimeter______.

选项

答案C

解析 本题考查的是对阐述文章的主旨事实与细节的了解以及对上下文之间的意义关系的理解。此句问的是为什么接受试验者要对在实验室里呆上一段时间做好准备,文章也提到了做试验时是很枯燥的,如果接受试验,就要做好如何打发时间的心理准备,选项C补充到原句中意思合适。故选C。
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