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Scientists say they have found a way to turn body fat into a better type of fat that burns off calories and weight The US Johns
Scientists say they have found a way to turn body fat into a better type of fat that burns off calories and weight The US Johns
admin
2022-01-04
55
问题
Scientists say they have found a way to turn body fat into a better type of fat that burns off calories and weight The US Johns Hopkins team made the【C1】________in rats but believe the same could be done in humans, offering the hope of a new way to treat obesity.
【C2】________the expression of a protein linked to【C3】________not only reduced the animals’ calorie intake and weight but also【C4】________their fat composition.
Brown fat is【C5】________in babies, which they use as a【C6】________source to generate body heat,【C7】________calories at the same time. But as we age our brown fat largely【C8】________and gets replaced by "bad" white fat, which【C9】________sits as a spare tyre around the waist.
"We will need a lot more work to tease this out, but it could offer a(n)【C10】________way to develop new treatments for obesity", an expert said.
Experts have【C11】________that stimulating the body to make more brown fat【C12】________white fat could be a helpful way to control weight and【C13】________obesity and its related health problems. Various teams have been searching for a way to do this, and Dr Sheng Bi and colleagues at the Johns Hopkins University School of Medicine believe they may have cracked it. They designed an experiment to see【C14】________suppressing an appetite-stimulating protein called NPY would decrease body weight in rats. When they silenced NPY in the brains of the rats they found their appetite and food【C15】________decreased. Even when the rats were fed a very【C16】________, high-fat diet they still managed to keep more weight【C17】________than rats who had fully functioning NPY. The scientists then checked the fat【C18】________of the rats and found an interesting change had occurred. In the rats with silenced NPY expression, some of the bad white fat had been replaced with good brown fat.
The researchers are【C19】________that it may be possible to achieve the same effect in people by injecting brown fat stem cells【C20】________the skin to burn white fat and stimulate weight loss.
【C12】
选项
A、rather than
B、as well as
C、in addition to
D、as to
答案
A
解析
上文提到褐色脂肪是对身体有益的,而白色脂肪是对身体有害的,因此要控制体重的话肯定是要更多的褐色脂肪,而不是白色脂肪,故答案为A项rather than“而不是”。B项as well as“也”和C项in addition to“此外”表并列,如果也要白色脂肪,控制体重就不那么有利。D项as to“关于”,代入句中意思不通。
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0
考研英语二
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