直到最近； not surprisingly 一点也不奇怪。
53. The survival of civilization as we know it is _C_ threat.
A within B towards C under D upon
under threat 受到威胁。
55. In some countries, _D_ is called "equality" [平等] does not really mean equal rights for all people.
A which B one C that D what
that可以引导主语从句，但只做引导词而不充当任何成分。
56. I walked too much yesterday and _A_ are still aching now.
A my leg muscles B my muscles of leg C my leg's muscles D my muscles of the leg
英语中一个名词修饰另外一个名词时第一个名词要用单数。 apple trees, eye drops
57. Radio, television and press _B_ of conveying news and information.
A are the most three common means B are the three most common means
C are the most common three means D are three the most common means
几个词修饰一个名词时修饰词的顺序应为：1. 定冠词the应该放在最前面（离名词最远）的位置；
2. 数词应放在第二位；3. 最后考虑其他形容词。
58. Liquids are like solids _C_ they have a definite volume.
A with that B for that C in that D at that
三个与that的搭配的表达形式：now that, in that [因为], except that。
59. When a fire _C_ at the National Exhibition in London, at least ten priceless paintings were completely destroyed.
A broke off B broke down C broke out D broke up
break out （火灾、战争）突然发生，爆发；
60. The destruction of these treasures was a loss for mankind that no amount of money could _D_. [make up for 弥补]
A stand up to B put up with C come up with D make up for
61. Then the speaker _B_ the various factors leading to the present economic crisis.
A went after B went into C went for D went on
go after 追求，设法得到； go into 谈论，叙述； go for 袭击/支持； go on 继续。
62. The students was just about to _C_ the questions, when suddenly he found the answer
