04-08-15/32

marcus18

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?  

gre3333

1.c : =  who is the first woman

2. agree with you.

marcus18

但为什么being... 不行呢?

substance有不可数的情况吗?