Doctors should take special care when treating children because their breathing
题型：不详难度：来源：
| Doctors should take special care when treating children because their breathing rate is different from _____ of adults. |
答案
| C |
解析
| 考查代词。 that代替的是the breathing rare；特指成年人的“呼吸率”。That特指前面所提到的不可数名词或可数名词单数。 |
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