作业帮Today our knowledge of food and what it does for our body is far more advanced than _____the old time.A.不填.B.those C.that of D.this of为什么不能选A?
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/02 20:36:34
Today our knowledge of food and what it does for our body is far more advanced than _____the old time.A.不填.B.those C.that of D.this of为什么不能选A?
Today our knowledge of food and what it does for our body is far more advanced than _____the old time.
A.不填.B.those C.that of D.this of
为什么不能选A?
Today our knowledge of food and what it does for our body is far more advanced than _____the old time.A.不填.B.those C.that of D.this of为什么不能选A?
C
that来代替前面的东西,比较的对象是现在我们对食物的了解和过去我们对食物的了解.而不是现在我们对食物的了解和过去这个时间.
这种用法比较常见:
The weather in Beijing is colder than that of Shanghai.
The number of students in Class One is larger than that of Class Two.
those也可以特指但修饰复数,如:
The gifts given by him is more expensive than those given by her.
than后面要加个指代过去的knowledge的宾语吧，不然句子不完整
B 因为前后指的是同样的东西（knowledge of food and what it does for our body ）用that 代指
填空中的内容应该是：很早以前的那些知识
that 替代的是那些知识，of 是“的”，所以选择 C
that of the old time
A 不填，只能代表的是省略了that(成了that the old time)，仍然缺少一个of
因为英语的比较语句中， 两个比较的东西要一致
所以，如果选A的话
那么就把the knowledge 和 the old time 并列在一起了 不平衡了
所以加一个that 来代the knowledge 避免重复
因为答案不是选A
c
that 是主语