题目

实现中华民族伟大复兴是近代以来中华民族最伟大的梦想，实现伟大梦想必须推进伟大事业。阅读材料，完成下列问题。材料一[乡村振兴]乡村振兴需要文化先行，乡村文化是乡村社会得以延续的核心。乡村振兴的核心是乡村文化的振兴。首先，文化赋予了生活的意义。乡土社会中有许多节日，每个乡土节日都有不同的意义，因为有了这些节日，村民的生活才更加有意义。其次，文化也赋予了乡村的秩序。要养成尊老爱幼的风气就需要有尊老爱动的文Gray hair is simply a part of the normal aging process, and the rate you go silver is genetically predetermined. Going gray is not associated with earlier death, and premature graying is not, generally speaking, a sign of an illness or ill health in younger adults. There are, however, some specific health conditions associated with gray or white hair, but for most of us, going gray is just a fact of life. Hair color comes from the pigment melanin(黑色素), which determines your individual shade. Hair without any melanin is pure white. The pigment is produced in cells called melanocytes, which inject pigment into the hair. At some point in everyone's lifetime, these cells slow down and eventually stop producing color. Scientists have yet to identify the exact mechanism by which melanocyte cell death occurs. A study of more than 4,000 women and men from 20 countries determined that about 75% of people between the ages of 45 and 65 have some gray hair. In general, people of European descent gray earliest followed by Asians and Africans. It's interesting to note that a lucky 1 in 10 has no gray hair by retirement age. Beginning at age 30, your chances of having gray hair go up 10-20% per decade. It may feel like you have more grays after a stressful event, but that's probably because middle age is basically a series of anxiety-ridden events. Between working, raising kids, and caring for older parents, the "sandwich" years of 45-65 can be stressful, especially for women. They are also when we naturally start to look older. At this point, there is still no silver bullet to keep away the grays. 【小题1】What would be the best title for this passage? A．Going gray. B．Tips to make hair color last C．Why does hair turn gray? D．Gray hair is in fashion. 【小题2】Which of the following is a true statement according to the passage?A．Scientists have found out how to prevent hair from turning gray. B．Europeans are more likely to gray than Asians and Africans. C．Gray hair means poor health or a sign of illness. D．Everyone will inevitably get gray hair by retirement age. 【小题3】Which is not among the reasons for hair turning gray according to the passage? A．Being physically weak. B．Stress from different sides. C．Death of melanocyte cell. D．Genetic factors. 【小题4】What does “silver bullet” in the last paragraph probably mean?A．Make-up B．Scientific research. C．Chemical weapon. D．Cure.