We are taught that a business letter should be written in a formal style in a personal style.

[A]rather than [B]other than [C]better than [D]less than

答案为A

For the new country to survive， for its people to enjoy prosperity， new economic policies will be required.

[A] to name a few [B]let alone [C]not to speak [D]let‘s say

(答案为B)

2)如果平行的两个成分在形式上是介词短语，而且介词相同，一般说来第二个介词不要省略。如：

At times， more care goes into the composition of newspaper and magazine advertisements than into the writing of the features and editorials.