吹炼过程中渣中FeO的变化规律是（）。 A.前后期高、中期低 B.前中期高、后期低
题型：单项选择题
问题：
吹炼过程中渣中FeO的变化规律是（）。
A.前后期高、中期低
B.前中期高、后期低
C.中后期高、前期低
D.中后期低、前期高
题型：单项选择题
How many animals are killed for human use every year in the United States? The numbers are in the billions, and these are just the ones we know about. Let’s break it down.
How many animals are killed for food? According to Farm Animal Rights Movement, about 10 billion land animals are killed every year for food in the United States, and about 58 billion are killed around the world. What’s more, this does not even include wild animals.
How many animals are killed for experiments? From 17 million to 100 million! The numbers are difficult to tell because most animals used in experiments are not reported.
How many animals are killed for fur? Every year, over 40 million animals are killed for fur around the world. About 30 million animals are raised on fur farms and killed, about 10 million wild animals are killed for fur, and this does not include sea animals and those that are injured and die later.
How many animals are killed by hunters? According to In Defense of Animals, hunters kill the most animals every year. Over 200 million animals are killed by hunters in the United States every year. This does not include animals that are injured and die later and those who die after their mothers are killed.
If these numbers are shocking enough for you and you want to do something to help, act out at this very moment. Refuse wild animals on dinner tables, say no to fur coats and try your best to protect the environment. Also, don’t forget to tell the numbers above to the people around you.
小题1:How many animals are killed every year for food around the world?
A．About 30 million.
B．About 10 billion.
C．About 40 million.
D．About 58 billion.小题2:Who kills the most animals?
A．Farmers.
B．Scientists.
C．Hunters.
D．Mother animals.小题3:Which is NOT the reason why people kill animals according to this article?
A．For fur.
B．For food.
C．For experiments.
D．For environment.小题4:Why does the writer use so many numbers in the article?
A．To tell us animals are human’s best friends.
B．To show which country kills the most animals.
C．To hope us to do something to protect the animals.
D．To tell us there are many animals around the world.