填空模拟题

27. In frigid regions a layer of permafrost under the soil surface prevents water from sinking deep into the soil, and so the water ______ the land, helping to create bog and ______ conditions.
A. freezes, tropical
B. parches, marsh
C. inundates, desert
D. aerates,jungle
E. floods, swamp

28.
Although the bystander's account of the car accident at first seemed ______ , the police officer was surprised, on further investigation, to find that it was ______ .
A. dubious, erroneous
B. incongruous, inconsistent
C. implausible, correct
D. logical, pertinent
E. probable, coherent

题意解析及中文释义

题意解析及中文释义：

27.
题意解析：
因为水被永冻层阻止进入土地内部，故淹没了土地，空格一候选C，E。再由and连接并列关系，所以空格二选bog的同义词，选择E。
中文释义：
在冰冻地区地表下的永冻层阻止水渗透到土地里，因此水淹没了土地，形成了沼泽和湿地环境。

28.
题意解析：
由although引导反义关系，两空都要填入一词来表达对旁观者解释的看法，故两空格填入一组反义词，选择C。
中文释义：
尽管旁观者对汽车事故的描述起初看起来很难令人信服，但随着警官的进一步调查却惊讶地发现确实如此。