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The doctor said jokingly that his own infection of the virus _______ the discovery of a vaccine (????)of the disease.
A. stood for B. called for C. paid for D. contributed to
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The doctor said jokingly that his own infection of the virus _______ the discovery of a vaccine (疫苗)of the disease
- A.stood for
- B.called for
- C.paid for
- D.contributed to
The doctor said jokingly that his own infection of the virus _______ the discovery of a vaccine (疫苗)of the disease.
A. stood for B. called for C. paid for D. contributed to
查看习题详情和答案>>The doctor said jokingly that his own infection of the virus _______ the discovery of a vaccine (疫苗)of the disease.
A. stood for B. called for C. paid for D. contributed to
查看习题详情和答案>>
The doctor said jokingly that his own infection of the virus _______ the discovery of a vaccine (疫苗)of the disease.
| A．stood for | B．called for | C．paid for | D．contributed to |