[单项选择]{{B}}第二篇{{/B}}

{{B}} Late-night Drinking{{/B}} Coffee lovers beware. Having a quick "pick-me-up" cup of coffee late in the day will play havoc with your sleep. As well as being a stimulant, caffeine interrupts the flow of melatonin, the brain hormone that sends people into a sleep. Melatonin levels normally start to rise about two hours before bedtime. Levels then peak between 2 am and 4 am, before falling again." It’s the neurohormone that controls our sleep and tells our body when to sleep and when to wake," says Maurice Ohayon of the Stanford Sleep Epidemiology Research Center at Stanford University in California. But researchers in Israel have found that caffeinated coffee halves the body’s levels of this sleep hormone. Lotan Shilo and a team at the Sapir Medical Center in Tel Aviv University found that six volun A. melatonin levels need to be raised. B. neurohormone can wake us up. C. coffee is a stimulant. D. decaf is a caffeinated coffee. 查看答案 更多"{{B}}第二篇{{/B}} {{B}} Late"的相关试题: [单项选择]{{B}}第二篇{{/B}} {{B}} Late-night Drinking{{/B}} Coffee lovers beware. Having a quick "pick-me-up" cup of coffee late in the day will play havoc with your sleep. As well as being a stimulant, caffeine interrupts the flow of melatonin, the brain hormone that sends people into a sleep. Melatonin levels normally start to rise about two hours before bedtime. Levels then peak between 2 am and 4 am, before falling again." It’s the neurohormone that controls our sleep and tells our body when to sleep and when to wake," says Maurice Ohayon of the Stanford Sleep Epidemiology Research Center at Stanford University in California. But researchers in Israel have found that caffeinated coffee halves the body’s levels of this sleep hormone. Lotan Shilo and a team at the Sapir Medical Center in Tel Aviv University found that six volun A. Caffeine blocks production of the enzyme that stops melatonin production. B. Caffeine interrupts the flow of the hormone that prevents people from sleeping. C. Caffeine halves the body’s levels of sleep hormone. D. Caffeine stays in the body for many hours. 查看答案 [单项选择]第二篇Late-night Drinking Coffee lovers, be careful. Having a quick "pick-me-up" cup of coffee late in the day will interrupt your sleep. As well as being a stimulant (兴奋剂), caffeine interrupts the flow of melatonin (褪黑激素)，the brain hormone that sends people into a sleep. Melatonin levels normally start to rise about two hours before bedtime. Levels then peak between 2 am and 4 am, before falling again. "It’s the neurohormone (神经激素) that controls our sleep and tells our body when to sleep and when to wake," says Maurice Ohayon of the Stanford Steep Epidemiology Research Center at Stanford University in California. But researchers in Israel have found that caffeinated coffee halves the body’s levels of this sleep hormone. Lotan Shito and a team at the Sapir Medical Center in Tel Aviv University found that six volunteers slept less well after a cup of caffeinated coffee than after drinking the same amount of decaf (脱咖啡因咖啡). On average, subjects slept 336 minutes per night after drinking A. melatonin levels need to be raised. B. coffee is a stimulant. C. neurohormone can wake us up. D. caffeine can balance our brain hormone. 查看答案 [单项选择]第二篇 　　 Road Trip Vacations 　　It’s summer. In the United States, it’s the season of swimming pools, barbeques (户外烤肉), camping and road trips. 　　Road trip vacations where the car journey is part of the fun are especially popular with college students, who like to explore the country on wheels. These budget trips are ideal for students who often have plenty of free time but little money. 　　"Ever since I went to college, I’ve been traveling around a lot, exploring the country," said Austin Hawkins, a 19-year-old college student from New York. This summer, Hawkins and his friends have spent weekends traveling in New England. 　　The best part about car trips, said Hawkins, is that you can be spontaneous. "On a road trip, if you get interested in things you see along the way you can stop and explore." 　　Matt Roberts, a 20-year-old student from Ohio who drove to Montreal, Canada, agrees. "With road trips you don’t have to plan in advance, you A. College students who like to travel on wheels. B. Teachers who have plenty of free time but little money. C. Volunteers who want to help rebuild New Orleans. D. Americans who have no cars. 查看答案 [单项选择]{{B}}第二篇{{/B}} {{B}}Shrinking Water Supply Poses Threat to Peace{{/B}} "Water, which is essential for life, costs nothing. On the other hand, diamonds, which are essential for nothing, cost a lot." Unfortunately, the world has changed considerably since an 18th century economist made this remark. What was true over 200 years ago is certainly no longer true now, in a number of countries people pay as much for water in their homes as they do for electricity. Like health, we ignore water when we have it — unless there are floods, of course. Once there is a threat to our water supply, however, water can quickly become the only thing that matters. We know only too well that, without water, there can be no life. The situation is now becoming so bad that environmentalist feel it may be necessary to shock the A. People now pay as much for water as they did 200 years ago. B. People now pay as little for water as they did 200 years ago. C. Water now costs as much as it used to. D. Water now has become more expensive than it was. 查看答案 我来回答: 提交 最新试题 ●    [判断题]移位寄存器一般采用边沿D触发器构成 ●    [单选题]新设备投运后(____)内发生的因建设质量问题导致的设备故障或异常事件，由建设管理单位（部 ●    [单选题]下列哪项指标不属于躯体健康测量指标 ●    以下哪些不是民事诉讼法所规定的诉中财产保全措施所必须具备的条件 ●    [判断题]云梯消防车是指主要装备伸缩云梯，可向高空输送消防人员、灭火物资、救援被困人员或喷射灭火剂的 ●    [判断题]行车相关岗位应按列车运行计划开展正常情况下的行车组织工作，最大限度地确保列车运行计划的兑现 网站地图 我要搜题网  版权所有  ©2023  湘ICP备18016427号   购买搜题卡查看答案 [会员特权] 开通VIP， 查看 全部题目答案 [会员特权] 享免全部广告特权 推荐91天 ¥36.8 ￥80元 31天 ¥20.8 ￥40元 365天 ¥88.8 ￥188元 请选择支付方式 微信支付 支付宝支付 点击支付即表示同意并接受了《购买须知》 立即支付 系统将自动为您注册账号 已有账号登录 找回账号密码 请使用微信扫码支付 订单号： 请不要关闭本页面，支付完成后请点击【支付完成】按钮 支付完成 取消支付 恭喜您，购买搜题卡成功 系统为您生成的账号密码如下： 账号 密码 重要提示：请拍照或截图保存账号密码！ 我要搜题网官网：https://www.woyaosouti.com 我已记住账号密码