几道英语题~~帮忙解析一下!~~~重谢!~9511

Question

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!

Answer 1

(D)high emphasis是高度重视
由于学校高度重视学生上课情况,所以讲师会把你上课缺席的情况汇报给你的导师的.
(A)done, done 作为homework的定语.如果用have则是homework having been done on time leads to better grades.
(D)演讲完之后,就开始了热烈的讨论.a lively discussion started是主句,前面是时间状语,因此B&C排除,如果是A表示正在演讲的时候,展开了热烈讨论,显然与情景不合,且started是过去式,所以只能选D
52(A)Be responsible for sth.对...负责任.A作对...负责的意思时是Vi,导致，引起构成决定性的或主要的因素(通常是不好的事),通常一般作证明,说明解,B后面不能用for.D是对...有义务.显然不合适;C,be responsible for对...负责.如果此处用,表示这个男人是专门负责杀死小女孩的,因为他就是负责小女孩的死.可以说"The police are responsible for the preservation of public order and security.
警察有责任维护公共秩序和安全。",有责任,义务的意思.
53.(D)issue指重大的事项,一般是国际事件也用此单词.B不可以指事项;A,不合逻辑,这件事不是问题,目标很明确.C小事.