选填正的精选

问题详情：光电效应实验装置示意图如图所示．（1）若要使发生光电效应的电子不能到达A极，则电源的a极应为 极（选填正、负）（2）用频率为v的普通光源照*k极，没有发生光电效应，用频率大于ν的光照*k极，则立即发生了光电效应；此实验说明发...

问题详情：请根据电解饱和食盐水的实验内容填写：（1）阳极与电源的     极（选填正或负）相连；阳极产生      （填化学式）气体；它的检验方法是                   _________。（2）阳极发生       ...

问题详情：单项选择。从A、B、C三个选项中选择正确*填空。Mybrotherwants____orange,not____orangejuice.A.an;/                                  B.an;an           ...

问题详情： 单项填空 从A、B、C三个选项中选择正确的*填空。Therightpronunciationoftheword“success”is______.A./sək'ses/                         B./'səkses/         ...

问题详情：单项填空从A、B、C三个选项中选出正确的*填空。The_______ofmosttreeswillfallinautumn.A.leaf                  B.leafs                  C.leaves【回答】C知识点：名...

问题详情：选择填空；从A、B、C、D四个选项中，选出可以填入空白处的正确*。Pleaseacceptthepresent________ourbestwishes.A.for         B.with       C.to         D.of【回答】B知识点：动词时...

问题详情：单项填空。从A.B.C.D.四个选项中选择能填入空白处的正确*。Mikeis_____honestboy.Henevertellsalie.A.a       B.an        C.the          D./【回答】B 知识点：冠词题型：选择题...

问题详情：单项填空在四个选项中，选出可以填入空白处的正确选项_________unusualexperienceyouhadintheUSA!        A.Whata           B.Whatan      C.What         D.How【回答】B...

问题详情：语法填空；从A、B、C三个选项中选择正确的*填空。BythetimeIgottotheairport,theplane________.A.havetakenoff               B.hadtakenoff           C.istakenoff【回答】B知识...

问题详情：单项填空,从A、B、C、D四个选项中，选出可以填入空白处的正确选项。       girlstookpartintheHappyGirlCompetition,butonlyfewofthemsucceeded.A.Thousandof     B.TwothousandsC.Twothousandof...

问题详情：语法填空从A、B、C三个选项中选择正确的*填空。Englishis________usefullanguagein________world.A.an;the      B.a;the        C./;the【回答】B知识点：冠词题型：选择题...

问题详情：单项填空，在每小题四个选项中，选出可以填入空白处的正确*。Hedecidednottotellhisparentsthathewasgoinghomebecausehewantedtogivethem a_______.       A.gift             B.note  ...

问题详情：单项填空。从A.B.C.D四个选项中选择能填入空白处的正确*。-what`s  this_______English?       ---I________know.    A.on;do                B.for;does      C.at;doe...

问题详情：单项填空 从A、B、C三个选项中选择正确的*填空。—It’s_____usefulbook,yes?—Yeah,ittellsushowtoplay_____piano.A.an,the        B.a,/                 C.a,the【回答】C知识...

问题详情： 知识运用;语法填空从ＡＢＣ三个选项中选择正确的*填空.Thereis______“W”and______“N”intheword“woman”.  A.a;an               B.an;/                 C.a;the【回答...

问题详情：将正确的选项填入空白处   Sandraistwentyyearsold.ShecomesfromWuhan,acityinChina.She____1___withherauntanduncleandthreecousinsinManhattan（曼哈顿）,apartofNewYork.Herparentsandtwobrothersstillliv...

问题详情：单项填空；从A、B、C、D四个选项中选出能填入空白处的正确*。Lindadidn’ttellherparentsthatshewasgoing_____homebecauseshewantedtogivethem_____surprise.A./;a               B. /;the ...

问题详情：语法填空。从A、B、C三个选项中选择正确的*填空。Hewouldrather________moneytocharitythan________himselfexpensivethings.donate;buy       B.donate;buy         C.donating;buying【回...

问题详情：  4（选填“＞、＜、=”）【回答】＜．知识点：实数题型：填空题...

问题详情：单项选择，从A、B、C三个选项中选择正确的*填空。Heexpect________ youthisafternoon.A.see                B.tosee             C.seeing【回答】B知识点：非谓语动词题型：选择题...

问题详情：选词填空(短文选词填空)experience           without                active                  idea                     enjoytired...

问题详情：选词填空(句子选词填空)am                  is                    are 1.Mr.Green                atschool.2.---              ...

问题详情：选择正确的词填空______(would/will)happeniftheymissthebus?wehavethepartytoday,half______(class/theclass)won’tcome.wewatchavideo,Iwillbe______(boring/bored).actionmovieisexciting.Let’shurryup....

问题详情：完形填空阅读下面的短文，选出能填入空白处的正确选项 MynameisGrace.Look!Thisisapictureof   1   family.Aboyisinit.   2  ismybrother,Tommy.Tommyis   3   thesofa,Awoman（妇女）isinthepi...

问题详情：完型填空7完形填空。根据短文内容，选择正确的选项。AthousandyearsagoHongKongwascoveredbyathickforest.Asmoreandmorepeoplecameto1inHongKong,thesetreeswerecutdownandbu.Nowthereis2forestleft,thoughthe...