56. The French pianist [n. 钢琴师] who had been praised very highly _C_ to be a great disappointment.
A turned up B turned in C turned out D turned down
turn up 后面不加宾语表示出现，后面加宾语表示将声音调高，调大;
turn in + 宾语 上缴，交出; turn down 将声音调低，调小;拒绝;
refuse sb. 指直接的回绝; turn sb. down 则指委婉的拒绝;
turn out + 动词不定式 最终证明是，结果是。
57. Many difficulties have _B_ as a result of the change over to a new type of fuel.
A risen B arisen C raised D arrived
因本句未加宾语，估不应选不及物动词，可排除C项; arrive vi. 到达，抵达;
rise vi. 升起，升高(侧重指旗帜或太阳升起);数量的增高(侧重指水位、价位);
the sun rises in the east and sets in the west 太阳东升西落。
arise vi. 升起，升高，出现，发生(经常与抽象名词联用)。
69. A completely new situation will _B_ when the examination system comes into existence.
A arise B rise C raise D arouse
33. Last year the advertising rate _D_ by 20 percent.
A raised B aroused C arose D rose
58. He made such a _D_ contribution to the university that they are naming one of the new buildings after him.
A genuine B minimum C modest D generous
name after 以…的名字来命名。genuine adj. 真正的，货真价实的; genuine leather 真皮;
minimum adj. 最低的，最小的; modest adj. 谦虚谨慎的，适度的;
generous adj. 慷慨的，慷慨大方的(修饰贡献等用这个)。
59. Helen was much kinder to her youngest child than she was to the others, _D_, of course, made the others jealous.
A who B that C what D which
which在这里是引导非限定性定语从句，which引导非限定性定语从句有2个特点：
1. which前面有逗号与其他句子分开。 2. which指的是前面整句话的内容。
as也可以引导非限定性定语从句，指的都是一句话的内容。
which指一句话的内容只能置于该句之后，而as既可以在后也可以在前。
67. _C_ is known to the world, Mark Twain is great American writer.
A That B Which C As D It
60. In the advanced course students must take performance tests at monthly _B_.
A gaps B intervals C length D distance
interval n. 间隔(即可指空间间隔，也可指时间间隔)，四级考试中专考时间间隔的概念。
interval是固定与介词at搭配的。
23. Students or teachers can participate in excursions to lovely beaches around the island at regular _D_.
A gaps B rate C length D intervals
at regular rate 以规则的速度; at regular interval 以规则的时间间隔;
61. Mr. Johnson preferred _A_ heavier work to do.
A to be given B to be giving C to have given D having given
64. Our company decided to _D_ the contract because a number of the conditions in it had not been met.
A destroy B resist C assume D cancel
65. She is _C_ a musician than her brother.
A much of B much as C more of D more as
be of 具有某种性质、品质或特点;
66. Having been found guilty, the man was given a severe _B_ by the judge.
A service B sentence C crime D crisis
sentence n. 判决，判刑; crisis n. 危机; economic crisis 经济危机;
68. The residents, _C_ had been damaged by the flood, were given help by the Red Cross.
A all their homes B all whose homes C all of whose homes D all of their homes
当给出了句子的主语，且后面有两部分谓语动词，这两部分谓语动词之间又没有连接词，
时态也不同时，离主语近的谓语动词应为从句的组合成分。
69. You can't afford to let the situation get worse. You must take _D_ to put it right.
A decisions B directions C sides D steps
take steps 采取措施，采取行动; take measures 采取措施;
70. Look at the terrible situation I am in! If only I _B_ your advice.
A follow B had followed C would follow D have followed
if only 如果，要是...就好了，其后面的句子一定要用虚拟语气。
1. 如果if only后面的句子表示与现在或将来的事实相反，这时谓语动词用一般过去时体现虚拟语气。
2. 如果if only后面的句子表示与过去的事实相反，这时谓语动词用过去完成时体现虚拟语气。
47. If only the committee _D_ the regulations and put them into effect as soon as possible
A approve B will approve C can approve D would approve
如果if only后面的句子表示与现在或将来的事实相反，这时谓语动词用一般过去时，
也可以用would + 动词原形。
42. Mark often attempts to escape _C_ whenever he breaks traffic regulations.
A having been fined B to have been fined C being fined B to be fined
escape + 动名词。