第14题: [单项选择]The United States Constitution provides for a count of the population ______ a census, every ten years. A. called B. which called C. that it is called D. as called 参考答案:A 答案解析:[解析] 美国宪法规定每十年举行一次人口计数,又称人口普查。 [解析] 考查过去分词作定语的用法。根据句子结构,我们可以看出空格处要填先行名词count of the populatio