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单选题
WHO-UNICEF estimates now indicate that over 250 million children still suffer from vitamin A deficiency with many millions ______ are at risk.
A
more
B
less
C
least
D
most
参考答案
参考解析
解析：
WHO-UNICEF的估计表明有2.5亿儿童仍然患有维他命A缺乏症，还有其他几百万孩子处于濒临缺乏维他命A的危险之中。根据句意猜测，空格应该是与前文比较更多之意，故A项正确。
WHO-UNICEF的估计表明有2.5亿儿童仍然患有维他命A缺乏症，还有其他几百万孩子处于濒临缺乏维他命A的危险之中。根据句意猜测，空格应该是与前文比较更多之意，故A项正确。
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