【正文】 ho?peful?1y wi?ll en?able ? （ B） ?in th?e wav? elec?troma?gi?c wav?es do? l wi?l1， it? is h?oped， ?enabl?e （ ?C） lik?e ele?ctrom?ag?ic wa?ves， ?hopef?ully ?will ?enabl?e （ ?D） lik?e ele?ctrom?ag?ic wa?ves， ?would? enab?le， ho?peful?ly ?（ E） su?ch as? elec?troma?gi?c wav?es do?， wil?l， it? is h?oped， ? enab?le ? ?a sin?gle s?train? of p?lant ?is us?ed fo?r a g?iven ?crop ?over ?a wid?e are?a， a ?pract?ice f?oster?ed by? mode?rn se?edma?rketi?ng me?thods?， it ?incre?ases ?the l?ikeli?hood ?that ?the i?mpact? of a? sing?le cr?op di?sease? or p?est w?ill b?e dis?astro?us. ? （ A） I?f a s?ingle? stra?in of? plan?t is ?used ?for a? give?n cro?p ove?r a w?ide a?rea， a? prac?tice ?foste?red b?y mod?ern s?eedm?arket?ing m?ethod?s， it ? （ B） ?If a ?singl?e str?ain o?f pla?nt is? used? for ?a giv?en cr?op ov?er a ?wide ?area， ? as i?s fos?tered? by m?odern? seed?mark?eting? meth?ods， ?it ?（ C） A ?pract?ice f?oster?ed by? mode?rn se?edma?rketi?ng me?thods?， a s?ingle? stra?in of? plan?t use?d for? a gi?ven c?rop o?ver a? wide? area? （ D?） A si?ngle ?strai?n of ?plant? used? for ?a giv?en cr?op ov?er a ?wide ?area， ? a pr?actic?e fos?tered? by m?odern? seed?mark?eting? meth?ods， ? （ E） ?The u?se of? a si?ngle ?strai?n of ?plant? for ?a giv?en cr?op ov?er a ?wide ?area， ? a pr?actic?e fos?tered? by m?odern? seed?mark?eting? meth?ods， ? ? majo?rity ?of th?e int?ernat?ional? jour?nalis?ts su?rveye?d vie?w nuc?lear ?power? stat?ions ?as un?safe ?at pr?esent? but ?that ?they ?wil1， ?or co?uld， b?e mad?e suf?ficie?ntly ?safe ?in th?e fut?ure. ? （ A） ?that ?they ?wil1， ?or co?uld， ? （ B） ?that ?they ?would?， or c?ould， ? （ C?） they? will? be o?r cou?ld， ? （ D） t?hink ?that ?they ?will ?be or? coul?d （ ?E） thi?nk th?e pow?er st?ation?s wou?ld or? coul?d 9?. A c?ontro?versi?al fi?gure ?throu?ghout? most? of h?is pu?blic ?life， ? the ?Black? lead?er Ma?rcus ?Garve?y adv?ocate?d tha?t som?e Bla?cks r?eturn? to A?frica?， the? land? that?， to ?him， ?symbo?lized? the ?possi?bilit?y of ?freed?om. ? （ A） t?hat s?ome B?lacks? retu?rn to? Afri?ca， t?he la?nd th?at， to? him， ? symb?olize?d the? poss?ibili?ty of? free?dom ? （ B） t?hat s?ome B?lacks? retu?rn to? the ?Afric?an la?nd sy?mboli?zing ?the p?ossib?ility? of f?reedo?m to ?him ? （ C） t?hat s?ome B?lacks? retu?rn to? Afri?ca wh?ich w?as th?e lan?d whi?ch sy?mboli?zed t?he po?ssibi?lity ?of fr?eedom? to h?im ?（ D） so?me B1?ack39。?s mer?idian? and ?diffe?ring ? 12.? Alth?ough ?parti?ally ?destr?oyed， ? the ?archa?eolog?ists ?were ?able ?to in?fer f?rom w?hat r?emain?ed of? the ?inscr?iptio?n tha?t the? prie?st Zo?naino?s was? buri?ed in? the ?crypt?. （ ?A） Alt?hough? part?ially? dest?royed?， the ?archa?eolog?ists ?were ?able ?to in?fer ? （ B） A?lthou?gh pa?rtial?1y de?stroy?ed， t?he ar?chaeo?logis?ts ha?d inf?erred? （ C?） Alth?ough ?it ha?d bee?n par?tial1?y des?troye?d， th?e arc?haeol?ogist?s wer?e abl?e to ?infer? （ D?） Part?ial1y? dest?royed? thou?gh it? had ?been， ? the ?archa?eolog?ists ?had b?een a?ble t?o inf?er ?（ E） De?stroy?ed pa?rtial?ly， t?he ar?chaeo?logis?ts we?re ab?le to? infe?r 1?? all ?his p?rofes?sed d?isdai?n of ?such ?activ?ities?， Aud?en wa?s an ?invet?erate? lite?rary ?gossi?p. ?（ A） Fo?r all? his ?profe?ssed ?disda?in of? such? acti?vitie?s （ ?B） Hav?ing a?lways? prof?essed? disd?ain f?or su?ch ac?tivit?ies ? （ C） A?ll su?ch ac?tivit?ies w?ere， h?e pro?fesse?d dis?daine?d and? （ D?） Prof?essin?g tha?t all? such? acti?vitie?s wer?e dis?daine?d （ ?E） In ?spite? of p?rofes?sions? of d?isdai?ning ?all s?uch a?ctivi?ties ? 14.?The e?arnin?gs of? wome?n are? well? belo?w tha?t of ?men i?n spi?te of? educ?ation?al di?ffere?nces ?that ?are d?imini?shing? betw?een t?he se?xes. ? （ A） ?well ?below? that? of m?en in? spit?e of ?educa?tiona?l dif?feren?ces t?hat a?re di?minis?hing ? （ B） ?much ?below? that? Of m?en39。s s?urvey? show?ed th?at pe?ople ?livin?g in ?small? town?s and? rura?l are?as co?nside?r the?mselv?es no? happ?ier t?han d?o peo?ple l?iving? in b?ig ci?ties.? （ A?） no ?happi?er th?an do? peop?le li?ving ? （ B） ? not ?any h?appie?r tha?n do ?peopl?e liv?ing ? （ C） ?not a?ny ha?ppier? than? do p?eople? who ?live ? （ D） ? no h?appie?r tha?n are? peop?le wh?o are? livi?ng ?（ E） n?ot as? happ?y as ?are p?eople? who ?live ? 31.?It ma?y som?eday ?be wo?rthwh?ile t?o try? to r?ecove?r ura?nium ?from ?seawa?ter， ?but a?t pre?sent ?this ?proce?ss is? proh?ibiti?vely ?expen?sive.? （ A?） It m?ay so?meday? be w?orthw?hile ?to tr?y to ?recov?er ur?anium? from? seaw?ater ? （ B） ?Somed?ay， i?t may? be w?orthw?hile ?to tr?y and? reco?ver u?raniu?m fro?m sea?water? （ C?） Tryi?ng to? reco?ver u?raniu?m out? of s?eawat?er ma?y som?eday ?be wo?rthwh?ile ? （ D） T?o try? for ?the r?ecove?ry of? uran?ium o?ut of? seaw?ater ?may s?omeda?y be ?worth?while? （ E?） Reco?verin?g ura?nium ?from ?seawa?ter m?ay be? wort?hwhil?e to ?try t?o do ?somed?ay ?32. T?he un?derly?ing p?hysic?a1 pr?incip?les t?hat c?ontro?l the? mida?ir gy?ratio?ns of? dive?rs an?d gym?nasts? are ?the s?ame a?s the? body? orie?ntati?on co?ntrol?ling ?astro?nauts? in a? weig?htles?s env?ironm?ent. ? （ A） ?as th?e bod?y ori?entat?ion c?ontro?lling? （ B?） as t?he bo?dy or?ienta?tion ?which? cont?rols ? （ C） ?as th?ose c?ontro?lling? the ?body ?orien?tatio?n of ? （ D） ?ones ?to co?ntrol? the ?body ?orien?tatio?n of ? （ E） ?ones ?used ?in co?ntrol?ling ?the b?ody o?rient?ation? of ? ?he sp?rayin?g of ?pesti?cides? can ?be ca?reful?ly pl?anned?， but? acci?dents?， wea?ther ?condi?tions? that? coul?d not? be f?orese?en， a?nd pi?lot e?rrors? ofte?n cau?se mu?ch la?rger ?depos?its o?f spr?ay th?an th?ey ha?d ant?icipa?ted. ? （ A） ?weath?er co?nditi?ons t?hat c?ould ?not b?e for?eseen?， and ?pilot? erro?rs of?ten c?ause ?much ?large?r dep?o