阅读下面短文,从所给选项中选出能填入空白处的最佳选项,使短文通顺,结构完整,其中有一项是多余选项。
You are what you eat, as a saying goes. This is really true for the giant panda. What pandas eat has a big influence on many different parts of their lives.
(1) This is because pandas mostly eat bamboo, which is very poor in nutrition(营养) and difficult to take in. Since 99% of a panda’s food is bamboo, pandas have really small babies. Baby pandas are born helpless and tiny. (2) No other mammal’s babies are born so much smaller than their mother. But baby pandas grow quickly. (3)
The black and white fur of pandas may help them to hide. Once again, we can look at a panda’s food to help understand the reason. In winter, they can’t change their fur quickly enough to match their background like other animals can. (4) In the past, pandas lived in and travelled across large places and faced lots of predators(捕食者). So, their black and white fur was very important for them to keep safe.
(5) The main danger to pandas is not from predators, but rather from less bamboo, more human activities and climate change. The good news is that pandas are no longer known as endangered.
A. However, things are a little different today.
B. One-year-old pandas can be about 45 kg heavy.
C. They are just 140 g, about $\frac{1}{1000}$ the size of their mother.
D. For one, pandas have to spend more than half a day eating.
E. The baby pandas can’t see clearly at birth and sleep all day.
F. So being black and white helps them hide in both snow and the dark.