15.In 1865 the astronomer Maria Mitchell ,__, became appointed to the faculty of Vassar Collage.
C the first woman
D being the first woman
D为什么不可以呢?
32.Fats and fixed oils are greasy or waxy substance that in their pure state are normally tasteless,colorless,and odorless.
是否把它改为复数?
1.c : = who is the first woman
2. agree with you.
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