请教几道OG12关于代词、修饰的题

ymbspy · 发表于 2011-5-2 22:26:57

6. In late 1997, the chambers inside the pyramid of the Pharaoh Menkaure at Giza were closed to visitors for cleaning and repair due to moisture exhaled by tourists, which raised its humidity to such levels so that salt from the stone was crystallizing and fungus was growing on the walls.

(A) due to moisture exhaled by tourists, which raised its humidity to such levels so that salt from the stone was crystallizing

(B) due to moisture that tourists had exhaled, thereby raising its humidity to such levels that

salt from the stone would crystallize

(C) because tourists were exhaling moisture, which had raised the humidity within them to levels

such that salt from the stone would crystallize

(D) because of moisture that was exhaled by tourists raising the humidity within them to levels so high as to make the salt from the stone crystallize

(E) because moisture exhaled by tourists had raised the humidity within them to such levels that salt from the stone was crystallizing
为什么C、D中的them指代tourists，而E中的them指代chambers？

43.Laos has a land area about the same as Great Britain but only four million in population, where many
are members of hill tribes ensconced in the virtually inaccessible mountain valleys of the north.

(A) about the same as Great Britain but only four million in population, where many
(B) of about the same size as Great Britain is, but in Laos there is a population of only fourmillion, and many
(C) that is about the same size as Great Britain’s land area, but in Laos with a population of only four million people, many of them
(D) comparable to the size of Great Britain, but only four million in population, and many
(E) comparable to that of Great Britain but a population of only four million people, many of whom
C中OG的解释是“the reference of them is unclear” them难道不是很明显的在指代people吗？？

107. Originally developed for detecting air pollutants, a technique called proton-induced X-ray

emission, which can quickly analyze the chemical elements in almost any substance without

destroying it, is finding uses in medicine, archaeology, and criminology.

(A) Originally developed for detecting air pollutants, a technique called proton-induced X-ray emission, which can quickly analyze the chemical elements in almost any substance without destroying it,

(B) Originally developed for detecting air pollutants, having the ability to analyze the chemical elements in almost any substance without destroying it, a technique called proton-induced X-ray emission

(C) A technique originally developed for detecting air pollutants, called proton-induced X-ray emission, which can quickly analyze the chemical elements in almost any substance without destroying it,
C的解释是which定语从句语法上应就近修饰emission，但逻辑上应修饰technique，所以错误。但为什么A的which就是修饰technique？？

(D) A technique originally developed for detecting air pollutants, called proton-induced X-ray emission, whichhas the ability to analyze the chemical elements in almost any substance quickly and without destroying it,

(E) A technique that was originally developed for detecting air pollutants and has the ability to analyze the chemical elements in almost any substance quickly and without destroying the substance, called proton-induced X-ray emission,

111. Construction of the Roman Colosseum, which was officially known as the Flavian

Amphitheater, began in A.D. 69, during the reign of Vespasian, was completed a decade later,

during the reign of Titus, who opened the Colosseum with a one-hundred-day cycle of religious

pageants, gladiatorial games, and spectacles.

(A) which was officially known as the Flavian Amphitheater, began in A.D. 69, during the reign of Vespasian,

(B) officially known as the Flavian Amphitheater, begun in A.D. 69, during the reign of Vespasian, and

(C)which was officially known as the Flavian Amphitheater, began in A.D. 69, during the reign of Vespasian, and
C中的which为什么不是就近修饰RC？

(D) officially known as the Flavian Amphitheater and begun in A.D. 69, during the reign of Vespasian it

(E) officially known as the Flavian Amphitheater, which was begun in A.D. 69, during the reign of Vespasian, and

还有一点想请问大家，句尾的-ing分词到底什么时候是修饰前面整个句子，什么时候是修饰整个句子的主语？还是只能靠理解句意？？
希望能帮我解答，谢谢了！！