题目内容：
阅读下文，回答题：
请回答第21题：（ ）
参考答案：
答案解析：
单选题：阅读下文，回答题：请回答第21题：（ ）
- 题目分类：英语
- 题目类型：单选题
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请回答第21题：（ ）
请回答第21题：（ ）
Her dog ran out of the yard__________the old lady opened the
Her dog ran out of the yard__________the old lady opened the gate．
Accordingtothewriter,whatisnottheadvantageofgettingold?
Accordingtothewriter,whatisnottheadvantageofgettingold?
The popularity of the film shows that the reviewers' fears w
The popularity of the film shows that the reviewers' fears were completely _____
Which strategy is NOT taken for the purpose of saving water?
Which strategy is NOT taken for the purpose of saving water?
已知某地区某年的国民经济统计资料，如表2-3所示。表2-3单位．亿元根据上述资料请回答题：根据上述资料，计算国内生产总值
已知某地区某年的国民经济统计资料，如表2-3所示。表2-3单位．亿元根据上述资料请回答题：根据上述资料，计算国内生产总值可采用的方法有（ ）。