常用短语用法复习知识点wait on/wait up for/wake up wait on服侍，伺候 例句Is there anyone here to wait on us? 这儿有人招待我们吗？ This servant will wait on your guests. 这个服务员将为你的客人服务。 As soon as we sat down a waiter came over to wait on us. 谷雨刷题王 单词快速记忆法 新概念英语青少版 wait up for熬夜等候 例句I shall be home very late tonight, so don't wait up for me. 我今天晚上很晚才回家，不必熬夜等着我。 I won't be back tonight, so don't wait up for me. 我今晚不回来了，所以不用等我了。 Don't go so fast! Wait up for me! 别走得那么快！停下来等我一下！ wake up弄醒，叫醒；意识到或认识到某事物 例句Wake up! It's eight o'clock. 醒醒吧！已经八点钟了。 I was woken up by a noise in the room. 屋子里的声音把我吵醒了。 He hasn't yet woken up to the seriousness of the situation. 他还没意识到情况的严重性。 A. Heart failure can by all means be cured by Vitamin D3. B. Changes in heart function were measured by ultrasound. C. In the others, who took placebo, there was no change in cardiac function. D. Participants were asked to take vitamin D3 or a placebo tablet for one year. E. Sunscreen will prevent people from absorbing more Vitamin D3 to a great extent. F. The finding could make a significant difference to the care of heart failure patients. Vitamin D3 Improve Heart Function A daily dose of vitamin D3 improves heart function in people with heart failure, a five-year University of Leeds research project has found. Dr. Klaus Witte, from the School of Medicine and Consultant Cardiologist at Leeds Teaching Hospitals NHS Trust, led the study. He said: “This is a significant breakthrough for patients. It is the first evidence that vitamin D3 can improve heart function of people with heart muscle weakness –known as heart failure.” __67__ Vitamin D3 can be boosted by exposure to sunlight, but heart failure patients are often deficient in it even during the summer because older people make less vitamin D3 in response to sunlight than younger people. Vitamin D3 production in the skin is also reduced by sunscreen. The study, which was funded by the Medical Research Council, involved more than 160 patients from Leeds who were already being treated for their heart failure using proven treatments including beta — blockers, ACE-inhibitors and pacemakers. __68__ Those patients who took vitamin D3 experienced an improvement in heart function which was not seen in those who took a placebo. __69__ Heart specialists measure heart function by taking an ultrasound scan of the heart and measuring how much blood pumps from the heart with each heartbeat, known as ejection fraction. The ejection fraction of a healthy person is usually between 60% and 70%. In heart failure patients, the ejection fraction is often significantly impaired — in the patients enrolled into the study the average ejection fraction was 26%. In the 80 patients who took Vitamin D3, the heart’s pumping function improved from 26% to 34%. __70__ This means that for some heart disease patients, taking vitamin D3 regularly may lessen the need for them to be fitted with an implantable cardioverter defibrillator (ICD), a device which detects dangerous irregular heart rhythms and can shock the heart to restore a normal rhythm. 答案 67-70  F D B C