设O为坐标原点，抛物线y2=4x与过焦点的直线交于A、B两点，则OA•OB=（

I have _______used to ________with chopsticks for almost one year.

A．got, eating

B．been, eating

C．got, to eat

D．been, to eat

做空气中氧气含量测定的实验装置如图。下列有关说法正确的是

A．使用红磷的量越多，最终进入集气瓶的水也越多

B．本实验可以证明空气含有N₂、O₂、CO₂和稀有气体

C．燃烧匙中的红磷可以换成硫或木炭

D．若实验过程中，燃烧匙插入集气瓶的速度太慢，会影响测定的结果

某县县城"网吧、游戏厅一条街"上，有近百家网吧和游戏厅。许多中小学生一放学就前往玩游戏、上网，有的甚至为此旷课和彻夜不归。对此，广大家长反映极大，强烈要求关闭这些网吧和游戏厅。2009年5月，县公安局和文化局根据上级的统一部署，开展了"整治网吧和游戏厅"联合执法大检查。在检查过程中，要求所有经营者将已经取得的文化经营许可证和消防许可证交由两局联合设立的执法办公室重新审核。在审核过程中，根据市公安局和市文化局联合下发的通知，对60余家经营场所面积没有达到100平方米的经营者的许可证，都以公安局和文化局共同署名的形式决定予以吊销。方某也因经营面积只有60平方米而被吊销了文化经营许可证和消防许可证。方某对公安局和文化局的决定不服，分别向市公安局和市文化局提起复议申请，市公安局和市文化局都未予受理，并告知方某应向县人民政府提起行政复议。县人民政府受理行政复议后，发现原具体行政行为所依据的通知没有法律依据，中止了行政复议，将该通知转送市人民政府处理。市人民政府撤销了该通知。据此，县人民政府认定原具体行政行为于法无据，作出了撤销原具体行政行为的行政复议决定。

对该行为向哪个机关申请复议？

以下关于燃烧污染物的生成机理说法不正确的是( )。

A．燃料燃烧时NO_x产生的途径之一是燃烧时空气中的氮在较低的温度下被氧化而生成氮氧化合物，称为温度型NO_x
B．固体燃料煤中的硫以有机硫和无机硫形态存在，还有极少量的单质硫
C．液体燃料的灰分含量很少，一般为0.1%～0.4%
D．固体燃料燃烧所产生的烟尘主要来自燃料所含的灰分

Of all the employed workers in the United States, 12.5 million are part of a temporary workforce. The United States Bureau of Labor Statistics counts 9.2 percent of workers as those who have______(1) they term "alternative employment arrangements." The government predicts that temporary staffing agencies______(2) experience growth of 49 percent by 2010. If numbers increase at the rate ______ (3), these companies will add 1.9 million new jobs by 2010. That’’s more than any______(4) industry.Temporary workers were the first ones to be affected by the recent economic recession, but they are______(5) to be the first to regain positions as the economy picks up and companies work to rebuild. Employers use temporary workers as a resource because_______(6) offer flexibility and come at a low cost. Many temporaries are categorized as "independent contractors" instead of employees,______(7) allows the employer to avoid______(8) certain taxes. Because they are not required to offer benefits to temporary workers, companies can save a great deal of money by hiring temps. Usually, temporary workers can qualify_______(9) benefits if they work for a staffing company for a certain length of time. Most temps, however, do not continue with one company long______(10) to qualify for them because they regard the position as a step on the ladder to a______(11) position later.According to Richard Wahlquist, president of the American Staffing Association, 75_______(12) of temporary workers hope for transition out of the temporary staffing category______(13) a period of time. Wahlquist finds that temporary workers spend about 11 weeks on various assignments before their______(14) out of the temporary workforce. Many use temporary positions to gain experience and skills______(15) they move on to better jobs. Wahlquist says that the temp workforce as a whole turns______(16) 400 percent each year.Tom Dilworth, research director at the Employment Policies Institute, explains______(17) some workers like having temporary jobs______(18) it affords them a great deal of elasticity with time and everything. Some temps only have a limited______(19) of time to work and temp agencies can help coordinate jobs to fit their schedules. Other sometimes-employees use temporary jobs to get an______(20) to a company from the inside, to get a foot in the door of a certain business or career._______(21) others take temporary positions in hopes their employers will change them over to permanent positions eventually.Nearly all the industries in the United States use temporary workers.______(22) to Tim Costello, coordinator of the North American Alliance for Fair Employment, the growth of temporary labor threatens______(23) job security of permanent workers who fear replacement, as well as the temps who are more accustomed to turnover. He predicts that there will continue to______(24) a gradual shift from permanent employees to contingent staffing, and that such a_____(25) in workplace demographics will "lead to lower wages, poorer working conditions, and more instability."