Colorado farmer Chris Jessen and his wife Pam became the newest owners of a “panda cow” when it was born on their farm on New Year's Eve.The calf(小牛)，named Ben，was created through genetic engineering.Ben was the second panda cow born on Jessen's farm，but was a surprise，Jessen said that he was expecting a black calf.
This rare breed of panda cow gets its nickname from its similarity to a panda bear.Its white face and black fur around its eyes are extremely pandalike.There is a white belt circle around the middle part of its black body.Baby Ben has a black mark on its forehead.Its thick newborn coat also increases the similarity to a panda.Ben is expected to grow four feet tall and weigh close to 1,000 pounds，like its father.
The breed is not only extremely rare，but is also only ten years old.The first mini panda cow，Precious，was born on April 27,2000，on the Happy Mountain Miniature Cattle Farm，in Covington，Washington.It took 44 years of genetic engineering by Richard Gradwohl，although the farmer claims the new cow was actually an accident.Precious's father was an American Beltie bull，named Rebel.The mother was a small Happy Mountain cow，named Sarah.Gradwohl is the author of The Beginners Guide to Owning Your Own Miniature Cattle Business guidebook，a 24part article series.
These miniatures are actually kept to be pets.Jessen plans to sell Ben after training.Cows are social animals that respond well to humans and some will come when their names are called.Panda cows can be petted and are popular with many people.A close relationship can be formed with them，like other more traditional pets.
39．Why was Ben a surprise to Chris Jessen?
A．Because Ben looked different from what he had expected.
B．Because Ben was born on New Year's Eve.
C．Because Ben was created through genetic engineering.
D．Because Ben was the second panda cow born on his farm.
40．What can we learn from the last two paragraphs?
A．Cows cannot understand humans' instructions very well.
B．Ben will be kept as a pet by Jessen.
C．Panda cows are too big to be petted.
D．Gradwohl knows how to manage miniature cattle business well.
41．Which of the following is a similarity between Precious and Ben?
A．They were both created through genetic engineering.
B．They are both four feet tall.
C．They belong to the same owner.
D．They were born in the same state of the USA.
42．What is the main purpose of this passage?
A．To introduce a new technology to us.
B．To show us how the panda cow is made.
C．To introduce a genetic engineering invention：the panda cow.
D．To introduce the Happy Mountain Miniature Cattle Farm to us.