请教GWD1-8

williams

GWD1-Q8:
The 32 species that make up the dolphin family are closely related to whales and in fact include the animal known as the killer whale, which can grow to be 30 feet long and is famous for its aggressive hunting pods.
A. include the animal known as the killer whale, which can grow to be 30 feet long and is
B. include the animal known as the killer whale, growing as big as 30 feet long and
C. include the animal known as the killer whale, growing up to 30 feet long and being
D. include the animal known as the killer whale, which can grow as big as 30 feet long and is
E. include the animal known as the killer whale, which can grow to be 30 feet long and it is
请问这题为什么选A呢？D为什么不对呢？谢谢！

victoria820

which can grow as big as 30 feet long and is

long is redundant here
should be "grow as big as 30 feet"

williams

xiexie

grow to be 30 feet long
grow as big as 30 feet 这两个描述都可以么？还是第一种grow to be 好一点呢？

victoria820

第二种好像用得多点