四级词汇考前大练兵(四)
选择正确的单词填入句子并翻译每个句子。
1. The number of _____species increases every year as natural habitats disappear.
A)dangerous B)serious C)endangered D)hazardous
答案:C
译文:由于栖息场所遭到破坏,濒临灭亡的物种数量每年都在增长。
解析:dangerous危险的;serious严重的;endangered遭受危险的;hazardous灾难的。因此,选项C是正确的。。
2. Outlines are used most often to ____the contents of long complex papers before the actual writing begins.
A)sketch B)illustrate C)draw D)describe
答案:A
译文:提纲是在写文章之前,对长篇繁杂的文章列出框架。
解析:Sketch大纲,概略;illustrate阐明;draw画;describe描写。因此,选项A是正确的。
3. We must ___the telegram arrives in time.
A)secure B)assure C)ensure D)certify
答案:C
译文:我们必须确保电报及时到达。
解析:secure安全的;assure使确信;ensure确保;certify证明。因此,选项C是正确的。
4. During their first teacher training year, the students often visited local schools for the ___of lessons.
A)observation B)observance C)investigation D)inspection
答案:A
译文:在第一年教学实习时,学生常常到当地学校去听观摩课。
解析:observation观测;observance遵守;investigation调查;inspection检查。因此选项A是正确的。
5. They were just going to give up the question, ___suddenly they found the answer
A)when B)after C)unless D)until
答案:A
译文:他们正准备放弃问题时,忽然想到了它的答案。
解析:此题需要一个时间状语,when等于the momemt that正好符合题意,选项A便是正确的.
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