64. The _D_ of blood always makes him feel sick.
A form B look C view D sight
form n. 形式，形状； view n. 风景，景色/视野，视域； look 指的是主观有意识的看；
sight n. 看见，瞥见（不强调主客观）。
66. Free medical treatment in this country covers sickness of mind as well as _B_ sickness
A normal B ordinary C average D regular
sickness of mind 精神病； normal adj. 正常的； average adj. 平均的，中等水平的；
regular adj. 有规律的，规则的； ordinary sickness 一般性疾病。
68. Although he had looked through all the reference material on the subject, he still found it hard to understand this point and her explanation only _C_ to his confusion.
A extended B amounted C added [add to 增加] D turned
70. It took him several months to ___ the wild horse.
A tend B cultivate C tame D breed
tame vt. 驯服； breed 强调的是繁殖，侧重指大批量的繁殖。
It take sb. sometime to do sth. 做某事花了某人多少时间。
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