2. 外语
  3. The best title for this passage would be ______ . Between 1961 and 1973, each year NASA spent approximately ______ billion on t

The best title for this passage would be ______ . Between 1961 and 1973, each year NASA spent approximately ______ billion on t

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问题 The best title for this passage would be ______ .
Between 1961 and 1973, each year NASA spent approximately ______ billion on the Apollo missions.
选项 A、$25.4
B、$1.95
C、$5.2
D、$2.54
答案B
解析 首先根据句子“Between l961 andl973，NASA spent approximately 25.4 billion on the Apollo missions.”得出总数为25.4 billion再除以13年，平均数为1.95 billion，所以B项正确。
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