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- "We thought we'd found a treatment for pancreatic cancer, but now we've run into a brick .
Question 1:
"We thought we'd found a treatment for pancreatic cancer, but now we've run into a brick ........ It only works*^*on mice, not on humans," Dr. Bertram told the head of the research center. A. house
B. yard
C. wall
D. kiln
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