How many people developed a reaction on both arms in the study in Japan？
A. 13.
B. 9.
C. 2.
D. Nobody.
查看答案
Placebo pills usually are made of ______.
A. inactive substance
B. active drug
C. radioactive substance
D. explosive substance
What the doctor at Beth Israel has in the primary nurse is a ______.
The employer dictated the letter to his secretary, who wrote it down in shorthand.
A. delivered
B. handed
C. read
D. Revealed
How are the events of Dorothea Dix's life presented in the passage？
A. In random order.
B. In chronological order.
C. In alphabetical order.
D. From greatest to least significance.
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