put the following events_______according to the time when they happened and then put them______ of

Question

put the following events_______according to the time when they happened and then put them______ of their importance in history.

A. in order; in order B. in the order; in an order
C. in an order; in order D. in order; in order
为什么选C

Answer 1

Put the following events in an order according to the time when they happened and then put them in order of their importance in history.

C. in an order; in order

in an order=按顺序

Be sure to include an order form and instructions for phoning in an order.
确保小册子包括定单和有关电话订购的说明。

in order=按顺序排列整齐；弄得秩序井然
Please tabulate the numbers in order.请把那些数字按顺序制成表。
The items are listed in order of importance.这些项目是根据其重要性排列的

in the order=按顺序排列,在订单中;
不偿失题中第二个空填它也完全对.
Rank the states in the order of size.按大小把这些州排列一下。
Remove in the order left-to-right.按从左到右的顺序取下。
I have one change to make in the order.我想改一下订单。

Answer 2

put them in an order according to the time when they appared
按照他们现世的时间挨次把他们摆列成序，

同理可推上句用in an order
in order of 指“按。。。。。排列”例如：按重要性，大小等排列。in order of importance/size

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