几道英语题~~帮忙解析一下!~~~重谢!~9511

几道英语题~~帮忙解析一下!~~~重谢!~9511
本人英语比较烂,请好心人详细解答!~谢谢了~
43. Because of the _____ emphasis placed on classroom work, the instructor will report your absences to the adviser.
(A) large (B) strong (C) hard (D) high
不懂本句意思,也不知道选哪个~
44. Homework _____ on time will lead to better grades.
(A) done (B) be done (C) having done (D) to have been done
? 应该选哪个?详细解释一下为什么~
45. The speech _____ a lively discussion started.
(A) being delivered (B) was delivered (C) be delivered (D) having been delivered
?这是个什么句子?请翻译一下~选哪个? 为什么
52. It does not alter改变 the fact that he was the man _____ for the death of the little girl.
(A) accounting证明;对...负有责任 (B) guilty (C) responsible需负责任的(for)(D) obliged
? A和C有什么区别?
53. Medical医学的 care看护 reform改革 has become this country’s most important public health _____.
(A) question (B) stuff (C) matter (D) issue
?应该选哪个?这几个'事件'的区别是什么?
答案是
B
A
D
C
C
...第一\四\五题疑问比较大!

43.Because of the _____ emphasis placed on classroom work,the instructor will report your absences to the adviser.
(A) large (B) strong (C) hard (D) high
选D.记住搭配high emphasis“高度重视”
“由于高度重视课堂作业,讲师会把你的缺席告诉指导老师.”
44.Homework _____ on time will lead to better grades.
(A) done (B) be done (C) having done (D) to have been done
选A.
“作业被按时做完会取得更好的成绩.”
主语：Homework
谓语：lead
宾语：grades
所以此空为homework的后置定语.
而能做定语的有：过去分词(A项),现在分词(C项),过去式(D项),故排除B.
homework“家庭作业”被做,应为被动式,故排除C.
D项动词不定式表示将来.
45.The speech _____ a lively discussion started.
(A) being delivered (B) was delivered (C) be delivered (D) having been delivered
选D.
“演讲”
主语：speech
谓语：started
无宾语
同上道题一样,此空为speech的后置定语.
而能做定语的有：过去分词,现在分词(AD项),动词不定式,故排除B和C.
由started看出,整句话是过去时,而状语所表示的动作发生在谓语动词之前,所以状语应用完成时,故选D.
52.It does not alter the fact that he was the man _____ for the death of the little girl.
(A) accounting证明;对...负有责任 (B) guilty (C) responsible需负责任的(for)(D) obliged
选C.
the man是补足语,做题时刻将其忽略,那么这句话变为...he was ___ for the death of the little girl.
A项,account有认为的意思.意思似乎符合.但在这里加了ing,与was组成过去进行时态,同时在这里就成了主动用法,是错误的.
B项,guilty,有罪的、有负疚感的.意思也正确,但正确用法是guilty of,句子中后面的介词为for,所以b不符合.
C项,responsible,有责任的.意思正确,同时responsible for也是这个词的正确用法
D项,obliged,有强迫和帮助的意思,不符合语境.因为be obliged for为对.有义务（而非责任）,即有义务做某事
53.Medical care reform has become this country’s most important public health _____.
(A) question (B) stuff (C) matter (D) issue
选D.issue：被讨论的事件,问题.
“医疗卫生改革已经成为这个国家最重要的公共健康问题.”
主语：Medical care reform “医疗卫生改革”
谓语：has become“已成为”
宾语：this country’s most important public health (issue) “这个国家最重要的公共健康(问题)”
A项,question：一般指询问性质的问题.
B项,stuff：“材料”,翻译不通,排除.
C项,matter：事件,事实.