41. During her study in Massachusetts Institute of Technology she has got the degree _____ PhD, and it is a degree ______ chemistry.
| A．of; at | B．in; at | C．of; in | D．in; of |
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41. During her study in Massachusetts Institute of Technology she has got the degree _____ PhD, and it is a degree ______ chemistry.
| A．of; at | B．in; at | C．of; in | D．in; of |
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