关于静电场，下列说法中正确的是
A．电子若只受电场力作用无初速释放，其运动经过的位置电势都增大
B．一个点电荷产生的电场中与该点电荷距离相等的点场强必定相同
C．在电场中某点放入的正电荷比放入的负电荷具有的电势能大
D．电场中某点的场强方向与试探电荷在该点所受电场力的方向一致
答案：A
A.电子若只受电场力作用无初速释放,肯定受到电场力作用，向高电势移动，所以经过的地方，电势会增加，所以A对；一个点电荷产生的电场
，与该点电荷距离相等的点场强大小相等，方向相反，所以场强不相同，所以B错；在电场中某点电荷具有的电势能
，既与电势有关，由于电荷量有关，所以正电荷比负电荷电势能不一定大，C错；电场中某点的场强方向与带正电的试探电荷在该点所受电场力的方向一致，D错，故答案选A.
Funny English Errors and Insights Laugh... And Learn! Welcome tothe website for Funny English Errors and Insights (2010), a new book of unconscious humour published by the National Library of Australia. Funny English Errors and Insights will be launched at the National Library in Canberra on 29th, October 2010. In the meantime, explore this website for other collections of real-life English language mistakes,including funny answers to exam questions, media misprints, and silly signs. See Funny English Errors: The B List for more than a hundred examples of funny English gaffes（失言）. For more funny English errors, read author Troy Simpson's blog. For still more examples,, join this website to download a free PDF version of English As She Is Taught, which lists our top 250 funny English language mistakes from that classic howlers book. Join this website FREE, and you can also: o Enter member-only competitions o Contribute your comments o Download free e-Cards o Be the first to know about our much-anticipated book, Funny English Errors and Insights (2010) ... Features Follows in the tradition of the runaway best-seller Howler  s books of the 1920s and 1930s o Includes quotes(引文) that have never been published before in this way o Includes more than 30 carefully selected funny photos o Topics include English, science, history, geography, religion, mathematics, and more o A perfect gift for students, teachers, parents, grandparents, public speakers, doctors, lawyers, journalists, clergy and religious, and anyone with a sense of humour! 小题1:The word launched in the second paragraph is closest to the meaning:
小题4:The text is aimed at introducing .
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