题目内容
阅读理解
Roses are red, but they've never been blue. They are actually a lot of colors, but they lack the right pigment genes(色素基因)that would make them blue.
But don't worry, if blue is your favorite color, science has the answer. US scientists have said they could make the missing pigment gene in the near future with developments in biotechnology.
The scientists were studying how some medicines affect the liver(肝脏) when they found a human protein that fumed things blue during the process. This may be used to create the world's first - known blue rose.
Scientists have already turned a cup full of bacteria (细菌) blue with an enzyme (生化酶) taken from a person's liver. They're now trying to put this same human gene into roses. Technology also promises to make sure the roe still smells good. Commercial growing has led to many beautiful but dull- smelling roses. Their colors are varied and they last a long time, but they've little fragrance.
Genetic engineers are also trying to get science to fight diseases and insects that affect the world's 120 different rose kinds. These roses are a US $10 billion-a-year business world-wide. The technology may be very useful in gardening, say scientists. “We could try to grow blue cotton, blue anything really. ”said a scientist..
So far, though, it hasn't been easy. They have only managed to get a few blue spots into the stems. “ It's not as easy as you may think. It's going to take more work. ”
They're not alone, an Australian company was set up in 1986 to develop a blue rose. Researchers have tried to put a “blue” petunia gene into rose`. But they have not had much success so far.
1.If you like blue roses, you ________.
[ ]
A.can have one in the future
B.can buy one in a shop
C.can never see one
D.can to go to the lab to enjoy them
2.Scientists try to find ________ to make blue roses.
[ ]
A.right human genes
B.a right protein
C.right pigment genes
D.a right enzyme
3.We can infer from the passage that biotechnology will ________.
[ ]
A.make blue roses possible
B.change our life greatly
C.help a lot in gardening
D.make roses smell good
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