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一、题文
幸福幸福是“临行密密缝,意恐迟迟归”的牵挂; 幸福是“春种一粒粟,秋收千颗子”的收获.幸福是“采菊东篱下,悠然见南山”的闲适;幸福是“奇闻共欣赏,疑 义相与析”的愉悦。幸福是“随风潜入夜,润物细无声”的奉献;幸福是“夜来风雨声, 花落知多少”的恬淡。幸福是“零落成泥碾作尘,只有香如故”的圣洁。幸福是“壮志 饥餐胡虏肉,笑谈渴饮匈奴血”的豪壮。幸福是“先天下之忧而忧,后天下之乐而乐” 的胸怀。幸福是“人生自古谁无死,留取丹心照汗青”的气节。The researchers say ribosomes use from 10 to 20 percent of the cell " s energy to make those proteins.Price wrote that “ because of this, it is impractical to destroy an entire ribosome ” when it starts to break dow n.H owever,“ repairi ng in dividual parts of the ribosome on a regular basis en ables ribosomes to con ti nue produci ng high quality prote ins for Ion ger tha n they would otherwise.This top quality production , in turn , keeps cells and the entire body functioning well. ”Price said,“ Ribosome is a very complex machine , like a car. ” They need “ maintenance to replace the parts that wear out the fastest.When tires wear out,” he explained,“ you don" t throw the whole car away and buy a new one.lt costs less to replace the old tires. ”“ Food, ” he said, “ isn" t just material to be burned — it" s a signal that tells our body and cells how to respond. ” Price said the findings help to explain how exactly our bodies age.And this may “help us make more educated decisions about what we eat".
二、解答
B [细节理解题。根据第四段中的 “ Price explai ns that ribosomes are respo nsible for maki ngimportant proteins in the cells.But with fewer calories , they slow down. ” 可知核糖体在纟田胞中 制造蛋白质的速度减慢了。故选 B。]本文到此结束，希望对大家有所帮助。
