G考考试

【单选题】Today，rapidtransportationandcommunication,thewholewordseemstobesmaller.()
A、regardlessof
B、inspiteof
C、insteadof
D、becauseof

【分析解答题】(本小题满分16分)

【单选题】听第7段材料，回答第8、9题。 Why doesDiana say sorry to peter
A、She has to give up her travel pan.
B．She wants to visit another city.
C．She needs to put off her test.

【分析解答题】(本题14分)

【分析解答题】某陆地生态系统中，除分解者外，仅有甲、乙、丙、丁、戊5个种群。调查得知，该生态系统有4个营养级，营养级之间的能量传效率为10%～20%，且每个种群只处于一个营养级。一年内输入各种群的能量数值如下表所示，表中能量数值的单位相同。
一般来说，生态系统的主要功能包括{{u}} ③ {{/u}}、{{u}} ④ {{/u}}，此外还具有信息传递等功能。碳对生物和生态系统具有重要意义，碳在{{u}} ⑤ {{/u}}和{{u}} ⑥ {{/u}}之间的循环主要以Co2的形式进行。

【分析解答题】[生物——选修3：现代生物科技专题](15分)植物甲具有极强的耐旱性、其耐旱性与某个基因有关。若从该植物中获得该耐旱基因，并将其转移到耐旱性低的植物乙中，有可能提高后者的耐旱性。回答下列问题： 将耐旱基因导入农杆菌，并通过农杆菌转化将其导入植物{{U}} {{/U}}的体细胞中，经过一系列的过程得到再生植株。要确认该耐旱基因是否在再生植株中正确表达，应检测此再生植株中该基因的{{U}} {{/U}}，如果检测结果呈阳性，再在田间试验中检测植株的{{U}} {{/U}}是否得到提高。

【单选题】
A、 thECAmBriDgE sCiEnCE FEstivAlCuriosityChAllEngE DArE to tAkE thECuriosityChAllEngE!thECAmBriDgE sCiEnCE FEstivAlCsF) is plEAsED to inForm you oF thE sixth AnnuAlCuriosityChAllEngE. thE ChAllEngE invitEs , EvEn DArEs sChool stuDEnts BEtwEEn thE AgEs oF 5 AnD 14 to CrEAtE Artwork or A piECE oF writing thAt shows thEir Curiosity how it inspirEs thEm to ExplorE thEir worl
D、stuDEnts ArE BEing DArED to DrAw A piCturE, writE An ArtiClE, tAkE A photo or writE A poEm thAt shows whAt thEy ArE Curious ABout. to EntEr thE ChAllEngE, All Artwork or piECEs oF writing shoulD BE sEnt to thECAmBriDgE sCiEnCE FEstivAl, mit musEum, 265 mAssAvEnuE, stuDEnts who EntEr thECuriosityChAllEngE AnD ArE sElECtED As winnErs will BE honorED At A spECiAl CErEmony During thECsF on sunDAy,April 21st. guEst spEAkErs will Also prEsEnt prizEs to thE stuDEnts. winning EntriEs will BE puBlishED in A Book. stuDEnt EntriEs will ExhiBitED AnD prizEs will BE givEn. FAmiliEs oF thosE who tAkE pArt will BE inCluDED in CElEBrAtion AnD BrunCh will BE sErvE
D、BEtwEEn mArCh 10th AnD mArCh 15h, EACh winnEr will BE givEn thE spECiFiCs oF thE Closing CErEmony AnD thECuriosityChAllEngE CElEBrAtion. thE progrAm guiDElinEs AnD othEr rElAtED inFormAtion ArE AvAilABlE At :http:// CAmBriDgEsCiEnCEFEstivAl.org. whAt typE oF writing is this tExt
A、An ExhiBition guiDE.
B、An Art show rEviEw.
C．An AnnounCEmEnt.
D、An oFFiCiAl rEport.

【分析解答题】(本小题满分13分)

【单选题】
A．

B．

C．

D．

【分析解答题】
若实验结束后停止人工管理，低密度处理小区将经历__________演替，时间足够长，最可能演替为以__________为主的水生植物群落。