1. By 1920 the area of the United States under cultivation had more than doubled in just 50 years， and the national population that surpassed 100 million.
答福：B
分析及考点：不构成定语从句，却误用定语从句连接词，把that去掉就好了。
参考译文：到1920年美国已开垦的在50年里已经翻了两倍，全国人口也超过了100个百万。
2. Some areas of the deep sea are vulnerable frequent natural disturbances taking the form of intense currents， mud slumps， low oxygen， and upwellings.
答案：A
分析及考点：词序错误，改成frequently vulnerable natural disturbances
参考译文：深海的一些地方，常常受到自然干扰，这些干扰以急流、泥浆、低氧和上升流的形式存在。
pumpkin补充： 大概是改成vulnerable to frequent natural disturbances
3. In the United States， the first roads were paved in colonial times， first with logs， latest with cobblestones or brick， depending on the region.
答案：B
分析及考点：词性混用。表示先后的状态时，用later
参考译文：在美国，最早的路是在殖民地时候铺的。一开始用木材，后来根据地区不同用鹅卵石或砖块。
4. In physics， sound is considered to be the waves of vibratory motion， nether or not they are heard by the human ear.
答案：C
分析及考点：连词使用表达错误。改成whether or not
参考译文：在物理上，声音被认为是振动性运动发出的波，不管人耳能不能听见。
5. Over one thousand mineral are known， most of which are characterized by definite chemical composition， crystalline structure， and physical properties.
答案：B
分析及考点：可数名词单复数误用，改成minerals
参考译文：有超过1千种矿物质为人所知。它们中很多都通过明确的化学组成，结晶结构和物理特性表现出来了。
