题目内容：
阅读短文，回答题．Rowena and Billy Wrangler are model high school students．They study hard and do extremelywell on achievement tests．And next year，Rowena will be aRending Harvard University．Billy，heryounger brother，hopes to go to Comell．What makes Rowena and Billy different from most studentsis that they don’t go to sch001．In fact，they’ve never been to sch001．Since kindergarten，they’vestudied at home．Neither Rowena nor Billy feels a．s if they’ve missed out on anything by being taught
at home．Like many of more than one million people who receive home schooling in the UnitedStates，they feel as if they’ve goRen a good education．
The home—schoofing trend began in the U．S．in the l980s with parents keeping their childrenout of public schools SO they could provide religious education at home．Today，as the home—school—ing trend continues to grow，parents are more likely to consider home schooling as an option becausethey believe schools don’t do a very good job of teaching and are occasionally dangerous places．ButCan parents really do a better job?
The answer in many cases is yes．In many studies，students taught at home ranked average or above average when compared to students who went to public schools．More importantly，these students were often more self-directed and have a greater depth of knowledge．“ney are very wellprepared for academic challenges，”says Patricia Riordan，the dean of admissions at George Mason University．
One such student，Robert Conrad，now a sophomore at university，claims he really learned howto study and schedule his time during his eight years of home schoolin9．Still，not every student is as successful as Robert．
“For every home．schooling success story，there are an equal number of failures，”states Henry Lipscomb，an educational researcher．“There are just SO many disadvantages that students taught athome have to overcome．”For example．they have fewer chances to intinact with otheir own age．Consequently，they sometimes lack the usual social skills．“No matter what, though," states Lipscomb．“home—schooling is a growing trend．I think we’ll be seeing more and more of this．”
Compared wim other students，the most different tlling Rowena and Billy is that__________ A．they study hard
B．they do extremely well on achievement tests
C．they never go to school
D．they feel they have goRen a good education
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