A(3_3)=6 , there are 6 ways to choose the bike in total.
the probability of each bike be chosen is 1/3
1/3*1/3*1/3*6=2/9
this formula means: there are 6 ways that each bike will be chosen.(ABC ACB BAC BCA CAB CBA), and each time the probability of the group is 1/3*1/3*1/3.
so, the totally probablity is 6 times 1/27, which is 2/9
BDE中,which和although都要引导一个句子,但是后面的restricted their gains是做limiting their investments to the U.S. stock market的谓语,所以which和although都是多余的。
C despite后面不能直接跟that从句,要用despite the fact that ...
A which brightened ... and also knocking ..., brightened和knocking不能并列
E brightening ... and it knocked不能并列
D it多余
BC语法上都对,但是B说的是”an expanding cloud导致了a large storm,这个cloud还brightened ... 和knocked out...“,C的意思是”cloud产生storm,同时还brightened ...和knocked out ...“,因为是伴随状语修饰主句,brighten和knocked out是跟着storm的形成同时出现的,不是一前一后,C的意思更准确。
主语是knowledge,谓语用单数,排除AE
B中不需要that of。
C和D,不管是独立主格结构informing ...和as从句,都是表示的原因,但是这两个表示的原因不一样。informing both ... and ...,只是说因为对literary style 和content都有影响,所以说knowledge对他成为作家有帮助;as it informed ... as much as...,是说因为对这两个方面的影响一样,所以才说knowledge对他成为作家有帮助,这种说法就不合理了,难道对这两方面的影响不是一样,就不能说knowledge有用了吗?语义上讲不通,不能选D。
B there is general market inactivity和it has provide ...是两个句子,没有连词,不对,排除。
E that引导的表语从句总没有谓语,排除。
C Making things even more difficult general market inactivity, if not paralysis, has lately provided ....,前面的making things even more difficult和主语general market inactivity之间最好有逗号(?),还有lately的位置错误,应该和even more difficult放一起,表示”最近更难的是..."。
剩下AD。
A如果还原成正常语序:general market inactivity has been making things even more difficult lately, ....,完成进行时表示的是从过去某个时刻开始一直持续到现在的状态,那就是making things even more difficult这个动作已经发生有一段时间了,和题目要表达的最近才让发生的意思不一样。题目的意思应该是”虽然还不能说市场已经瘫痪,但市场的不活跃,最近让事情变得更难了,它对定价没什么帮助“。
因为said that后面第一个句子是there were...,所以后面的and expected应该是与前面的said并列。
A that become more widely available里边的become时态错误。另外expected piracy to increase with ... connections that ...,这里的increase不是伴随着connections,而应该是伴随着某个”事件“而increase。
B expect与said平行,时态错误。
C and they expect...,时态错误
D they expected the increase of piracy ...,expect的是increase,而不是一个”事情“,相对比E,expect piracy to increase,expect的是一件事情。
通过different than可以排除BCD,剩下AE
完成时要与since连用,排除A。另外A里边as well as后面不用being,直接用different与cute, cuddly并列,如果加了being,就变成了are being biologically different from ...
be being done, 正在被...,He is being beaten by ...他正被K
be adj. 一直都是adj.的, He is foolish. 他(总是)傻傻的。
be being adj. 一时是adj.的,He is being silly. 他(突然)犯傻了。
首先排除C, C不是一个完整的句子。
D和E,都用to orbit the Sun... 来做定语修饰asteroids,但是实际上并不是做定语,不定式的主语是主句的主语Ida,这里是表示目的。Ida在the middle of the belt of asteroids的目的是为了orbit the Sun,语义错误。
A having been named for ... 和后面的the asteroid named Ida,named重复。另外A having done做状语的时候,不是完成时的概念,表示的是这个动作的”先时性“,就是说named这个动作要先于主句的动作(discover)发生,命名在被发现之前,不合逻辑。
另外句子要表达的重点在Ida is in the middle of the belt of asteroids,而不是Ida was discovered in 1884.
首先主语是fees and expenses,复数,可以排除掉C (includes)。
E 缺乏谓语部分,句子结构不完整,排除。
剩下ABD。
整个后面部分用来修饰interest expenses的有:on any cash overdrafts of its custodian account, the fund incur, during the period.
incur: If you incur something unpleasant, it happens to you because of something you have done.
A incurred by the fund,分词结构做后置定语
B the fund incurred句子做后置定语,定语从句省略了做宾语的that,但是前面有好几个名词,interest expenses, cash overdrafts, 都有可能是先行词。还有are to include表示将来,这里只是在描述fees and expenses会包含哪些费用,没必要用将来时。
D that the fund was to incur,谓语时态错误。
有比较级就要用than,排除ABD,剩下CE
E比较对象错误,比较的是两样东西(the costs for power from large coal and nuclear operations和the costs for power from smaller, more efficient plants that both make ... and take advantage of ...),要重复that/those。
首先that was quite tense要用限制性定语从句,而不用非限制性的,因为前面的动词是defuse,如果只是defuse一个普普通通的situation,在用此上面就有点说不过去。
再就是要用by...,不用with...,with表示”伴随", by表示“通过(某种方式)"。
还有就是state后面要接that...
A with错误
C which was ...错误
D with错误
E stating the debacle ...错误。这里state的内容应该是一个“事情“,而不是debacle本身。
后面的maintain the conditions, moderate temperature, give pure water back to atmosphere都是ocean的作用,和前面的ocean的状态cover 71 percent of Earth's surface在语义上不能混在一起。
cause only a mild illness可以用动名词,也可以用which从句来做定语修饰cowpox,但是如果causing only a mild illness前面加了逗号,就可以当做独立主格做状语,它的主语是experimental subjects,语义不对,可以排除BD。
另外整个that从句用的是虚拟语气,所以动词都要用虚拟形式。排除C和A。
主谓不一致可以排除BDE,剩下AC
B in addition to是介宾结构做后置定语,所以主语仍然是单数的food
D 主语是food, vegetables, and proteins,谓语要用create
E 主语是food,谓语用creates
C along with ...做状语修饰主句谓语动词create,along with是“与...一起”的意思,应该修饰food,而不是修饰create这个动作。
只要弄明白reduce numbers and genetic variation的是event,所以reduce numbers and genetic variation要做event的定语从句。
A greatly reducing their numbers是独立主格做状语,主语是ancestors,实际上reduce的动作发出者是event。
C so that里边their numbers were greatly reduced, and thus our genetic variation.,and后面的部分不是一个完整的句子,没有说明白genetic variation到底怎么个变化法。
D 同样的问题,from which their numbers were greatly reduced and thus our genetic variation.
E so as to后面动作的发出者变成了ancestors,ancestors主动reduce their numbers and genetic variation,不多。另外some time in the past放在了that之前,位置不对。
答案分成两拨,一波是用动名词做后置定语,一波用定语从句。
B 定语从句里头的时态错误
D advocated ... as the means of ,不是for the means of
A so as to reform them错误,从句里边的主语是prisoners,这样会使得reform them的动作执行者也变成了prisoners。
E 先不说语序,as the means for不对.
the means to do
the means of doing
这题如果不是被this干扰,能很快选出答案。
AB,被hinder的是the fact,不对
D,被hinder的是that从句这个事情,不对
E,被hinder的是一件事情,不对
agree后面不接on the unlikelihood that,排除DE
B的语义不对,说inflation to remain under control也不可能,题目要表达的是remain under control。
剩下A和C。
从题目证据的含义来看,C的意思只表达了对index的预测(index不大可能在inflation可控的情况下继续上涨),题目的意思是index不大可能继续上涨,inflation也还在可控范围内。
感觉你不适合讲题,没有这么做题的
之前SC学不明白就是因为看了毕出的讲解,他的解题思路根本不是gmat考试要考的东西,看Ron的讲解之后才明白的
as many(much) as 不能连用数值类名词:population、pay、amount、size、number、increase、drop等