单项选择题

That there is no sharp dividing line between insulators and conductors is ______ we have learned in this lesson.

A. that
B. which
C. what
D. it
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单项选择题
According to Poti, much of the foods children eating outside come from______. A supermarkets B. convenience stores C. fast food restaurants D. all the above
According to Poti, much of the foods children eating outside come from______.
A supermarkets B. convenience stores C. fast food restaurants D. all the above
单项选择题
The little girl was ______ with cold and her hands were all numb.
A. vibrating
B. rocking
C. swaying
D. shivering
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