将一正电荷从无穷远处移向电场中的M点，电场力做功为4.0×10-9J，若将一个等
题型：选择题
问题：
将一正电荷从无穷远处移向电场中的M点，电场力做功为4.0×10-9J，若将一个等量的负电荷从电场中N点移向无穷远处，电场力做功为6.0×10-9J，则M、N两点的电势φ1、φ2有如下关系（取无穷远电势φ∞=0）（ ）
A．φ1＜φ2＜0
B．φ1＞φ2＞0
C．φ2＜φ1＜0
D．φ2＞φ1＞0
题型：选择题
Britain's most popular lie has been disclosed, with one in four people admitting using "sorry I had no signal" when returning a missed mobile phone call, a survey found．
Researchers found the average Briton tells on average four lies every day or almost 1500 every year． Almost one in six men admitted they were most likely to lie to their wife or girlfriend, on average a
t least twice a day．The most popular lie was saying you had no mobile phone signal．with one in four people admitting regularly using the little white He．It usually came after they hit the "ignore" button when their mobile rang．
Three quarters of people think women are better Hare．The research found 46 per cent of girls have been caught lying, compared to 58 of men．
The second most common fib（无关紧要的谎言） is “I haven't got a
ny cash on me" when asked for money by tramps （流浪者）．beggars and Big Issue sellers．"Nothing's wrong - I'm fine" came third followed by "You look lovely" and "Nice to see you"．
Modern technology turned out to have contributed to many lies with "I didn't get your text" in 18th．"Our server was down" in 20th and "My battery died" in 26th place．
Other lies to make the top ten included "I'll give you a ring", "We're ju
st good friends" and "We'll have to meet up soon"．"I'm on my way" and "No, your bum doesn't look big in that" completed the top ten．
Men tell the most fibs, coming out with five every day compared to women who lie just three times． In many cases perhaps it is better to flatter with a fib than destroy someone with the truth, according to a spokesman for OnePoll, which carried out the research of 4．300 adults．
小题1:Whether the person being called has pushed the "ignore" button or _____．the caller at the other end hears the same tone．
A．really has no signal
B．can't get the text
C．has a battery failure
D．answers the call小题2:Most people think women are better liars because _____．
A．there're more women liars
B．fewer women liars are found out
C．women tell less harmful lies
D．women are harder to convince小题3:"Our server was down" is perhaps a lie told as an excuse for not _____．
A．inviting a friend to dinner
B．responding to an e - mail
C．coming to a party on 
time
D．cleaning one's room小题4:"You look lovely" and "I'm on my way" rank _____ on the popular - lie list．
A．3rd and 8th
B．5th and 10th
C．4th and 9th
D．5th and 12th小题5:The OnePoll spokesman seems to think it's _____ for the British to lie so much．
A．puzzling
B．disgusting
C．impossible
D．reasonable