第三组男性，50岁。主因四肢无力1年就诊，既往体健。查体：神清语利，脑神经（-），四肢肌力4级，肌张力高，四肢腱反射亢进，双上肢Hoffmann’s征阳性，双下肢Babinski’s征阳性，四肢痛觉对称。双侧大小鱼际肌、骨间肌萎缩、全身可见肌肉跳动，心肺未见异常。此患者肌电图有何特点（）
A . A.运动神经传导速度明显减慢
B . B.运动单位动作电位（MUAPs）时限增宽
C . C.可见纤颤电位
D . D.可见正锐波
E . E.神经传导速度正常
F . F.插入电位消失
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Part Ⅱ Reading Comprehension (Skimming and Scanning)Directions: In this part you will have
Part Ⅱ Reading Comprehension (Skimming and Scanning) Directions: In this part you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1. For questions 1-7, choose the best answer from the four choices marked A), B), C) and D). For questions 8-10, complete the sentences with the in formation given in the passage. How to Retire Earlier It's every working staff's dream: saying goodbye to the daily grind while you still have your own teeth. In our early retirement fantasies, we're traveling the world, healthy and in the prime of our lives, visiting those hard-to-pronounce countries we've always talked about and sampling the finest local fare. Retirement-related Problems Surveys show that more than half of workers between the ages of 30 and 50 plan to retire before they're 60. But there's only one problem with this wishful thinking: Retiring early is easy, but making your money last is hard. One problem with saving up for early retirement is that we tend not to think beyond those first few glorious years of good health and full checking accounts—we don't do the long-term math. If the average male life expectancy is 75.2 and we retire at 55, then our savings, and stock market investments need to last for 20 years. And what if we live even longer than average? And don't forget that life can get tricky during those last five or ten years. Very few fortunate souls drift away in their sleep at age 88 without ever having major surgeries, hospitalizations or chronic (and ex- pensive) conditions to manage—not to mention the ever-increasing costs of medical insurance and prescription drugs. While we tend to overestimate our health, we underestimate our post-retirement financial needs. A 2002 survey found that only 17 percent of workers thought they'd need 80 percent of their salary after retirement. Forty percent thought they'd be fine with 60 percent of current earnings. That might suffice for a few good years, but the longer you live, the less chance your money will last. Furthermore, isn't it possible that traveling the world and living out of a suitcase could get pretty tedious? Did you ever think that you might be bored without a day job? Do you have enough hobbies and interests to sustain you for 20 to 30 years without business trips, deadlines and daily meetings? But don't get discouraged. If you're serious about retiring early and dedicated to making it work, you can make it happen. All it takes is some serious financial planning, a strict budget and some good old-fashioned luck. So how do you start planning for an early retirement? What are the most important calculations? What are some common mistakes? Financial Planning The first step when planning for an early retirement is to figure out exactly how much money you have right now. This is called your net worth. Net worth is calculated by adding up all of your assets (cash, stocks, retirement accounts and the value of your home) and subtracting all of your outstanding debt (mortgage, student loans and credit card debt). When you know how much you have, you need to figure out how much money you'll need when you retire. This amount depends on several factors: what you want to do when you retire, how early you want to retire and what standard of living you want to enjoy when retired. If you want to keep up your current standard of living as a retiree, the rule of thumb is that you'll be spending monthly at least 80 percent of what you're spending now. That other 20 percent you won't be spending accounts for work-related expenses: gas or public transportation fares for your commute, dry cleaning bills, lunches and the like. But if you plan to tr A．Because old people tend to sleep more than average. B．Because old people's health usually fails during that time. C．Because the life after retirement could be very long or very short. D．Because some old People cannot endure major surgeries.
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