The passage is mainly about ______. Which is true when you have an infection?

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问题 The passage is mainly about ______.
Which is true when you have an infection?

选项 A、The number of red blood cells decreases.
B、The total number of blood cells remains the same.
C、The number of white blood cells increases.
D、The total number of blood cells changes.

答案C

解析 细节题。答案信息对应于第五段倒数第二句:When you have an infection...the number of white blood cells soars (当你受感染尤其是受到严重感染时,白细胞数量就会急剧增加),其中的soars就是答案选项中的increases。
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