题目内容
Doctors should take special care when treating children because their breathing rate is different from _____ of adults.
| A.one | B.those | C.that | D.some |
C
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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