考研易错题（2019/9/19）

第1题：设总体X的概率密度为 而X1，X1，…，Xn是来自总体X的简单随机样本，则未知参数θ的矩估计量为______．

【分析题】：

第2题：诊断腺癌时，下列指标中哪一项最重要 A．恶性肿瘤细胞呈腺样排列 B．肿瘤呈浸润性生长 C．肿瘤细胞异型性明显 D．肿瘤发生于实体腺

【单选题】： A     B     C     D

第3题：College sports in the United States are a huge deal.Almost all majorAmerican universities have football, baseball, basketball and hockey programs, and (1) millions of dollars each year to sports. Most of them earn millions (2) as well, in television revenues, sponsorships. They also benefit (3) from the added publicity they get via their teams.Big-name universities (4) each other in the most popular sports. Football games at Michigan regularly (5) crowds of over 90, 000.Basketball’s national collegiate championship game is a TV (6) on a par with any other sporting event in the United States, (7) perhaps the SuperBowl itself.At any given time during fall or winter one can (8) one’s TV set and see the top athletic programs--from schools like Michigan, UCLA,Duke and Stanford-- (9) in front of packed houses and national TV audiences. The athletes themselves are (10) and provided with sch61arships.College coaches identify (11) teenagers and then go into high schools to (12) the country’s best players to attend their universities. There are strict rules about (13) coaches can recruit--no recruiting calls after 9 p. m. , only one official visit to a campus--but they are often bent and sometimes (14) . Top college football programs (15) scholarships to 20 or 30 players each year, and those student-athletes, when they arrive (16) campus, receive free housing, tuition, meals, books, etC、 In return, the players (17) the program in their sport. Football players at top colleges (18) two hours a day, four days a week from January toApril. In summer, it’s back to strength and agility training four days a week until mid-August, when camp (19) and preparation for the opening of the September-to-December season begins (20) During the season, practices last two or three hours a day from Tuesday to Friday. Saturday is game day. Mondays are an officially mandated day of rest. A、promising B．pleasing C．prominent D．professional

【单选题】： A     B     C     D

第4题：By 1830 the former Spanish and Portuguese colonies had become independent nations. The roughly 20 million (1)_____of these nations looked (2)_____to the future.Born in the crisis of the old regime and Iberian,Colonialism, many of the leaders of independence (3)_____the ideas of representative government, careers (4) _____to talent, freedom of commerce find trade, the (5)_____to private property; and a belief in the individual as the basis of society. (6)_____there was a belief that the new nations should be sovereign and independent states, large enough to be economically viable and integrated by a (7)_____set of laws.On the issue of (8)_____of religion and the position of the church, (9)_____, there was less agreement (10)_____the leadership. RomanCatholicism had been the state religion and the only one (11)_____by the Spanish crown, (12)_____most leaders sought to maintainCatholicism (13)_____the official religion of the new states, some sought to end the (14)_____of other faiths. The defense of theChurch became a rallying (15)_____for the conservative forces.The ideals of the early leaders of independence were often egalitarian, valuing equality of everything.Bolivar had received aid from Haiti and had (16)_____in return to abolish slavery in the areas he liberate D、By 1854 slavery had been abolished everywhere except Spain’s (17)_____colonies.Early promises to end Indian tribute and taxes on people of mixed origin came much (18)_____because the new nations still needed the revenue such policies (19)_____.Egalitarian sentiments were often tempered by fears that the mass of the population was (20)_____self-rule and democracy. A、urged B．intended C、expected D、promised

【单选题】： A     B     C     D

第5题： A、dependent audit comes from your employer, who wants proof that the people you’re carrying on the company health plan really are your dependents. If you can’t prove they are, the company will drop them. The goal is to ferret out children who are over age 18 and not in school, ex-spouses, sometimes even nieces or nephews—people, in short, who do not meet an employer’s definition of dependent. If your company does not already conduct these audits, chances are it eventually will.And while it may strike you as an annoyance, do not ignore this task. Otherwise, eligible dependents could lose their health coverage. From an employer’s perspective, audits make good business sense. Health care costs have been rising by 5 to 10 percent a year for over a decade, and employers want to contain those costs.An audit of a 10,000-person employer will typically uncover 200 to 500 ineligible dependents, said John Fazio, a senior consultant with the employee benefits firm Towers Watson. Removing these people, who cost a company an average of $ 2,100 a head, translates into annual savings of $ 420,000 to $1.05 million a year for the employer. Dependent audits have been around for more than a decade.But they have become popular in the last few years, as employers desperately sought ways to trim their health care budgets. This year 69 percent of large companies plan to conduct a dependent audit, up from the 55 percent that planned to do so in 2008, according to a March survey by Towers Watson and the NationalBusiness Group on Health, a nonprofit organization of large employers. From the employees’ perspective, such audits are at best an annoyance, forcing them to gather paper work proving, say, that a child who had been covered for years remains eligible.At worst, an audit can be a wrenching and costly experience when a worker’s dependent is found to be ineligible and has to get insurance elsewhere. What is more, a worker could become liable for the money that an employer paid out for a spouse or child who should not have been on the plan. And, as audits have become more common, the process for employees has become more onerous. "It used to be the honor system," says Michael Smith, the chief executive ofConSova, a dependent auditing company. Just five years ago, employers typically asked that you sign an affidavit stating that your dependent was eligible to be on your plan. "Now, they want documentation," Mr. Fazio saiD、"It’s a more diligent process. " That means you may have to dig up birth and marriage certificates, bank statements, divorce agreements and other documents that prove your child or spouse are legal dependents. The process of putting a dependent on an insurance plan used to be the honor system in that A、only the most outstanding employees were given such an opportunity. B．it was an honorable thing for an employee to get his child into the plan. C．such a process helped to facilitate employer-employee relationship. D．employees simply signed a statement and were given full credibility for it.

【单选题】： A     B     C     D