Having finally reached a tentative labor agreement with its company's pilots, it must now be determined by the airline's board of directors how the airline can both increase profits and compete more effectively for customers

Having finally reached a tentative labor agreement with its company's pilots, it must now be determined by the airline's board of directors how the airline can both increase profits and compete more effectively for customers than they did in the past.

 A

it must now be determined by the airline's board of directors how the airline can both increase profits and compete more effectively for customers than they did in the past

 B

it must now be determined by the airline's board of directors how the airline can both increase profits and must compete more effectively than in the past for customers

 C

the airline's board of directors must now determine both how to make the airline increase profits and compete more effectively for customers than they did in the past

 D

the airline's board of directors must now determine how the airline can both increase profits and compete more effectively for customers than it did in the past

 E

the airline's board of directors must now determine how the airline can both increase profits and also how to make it compete more effectively than in the past for customers

【申友解析】

正确答案：D

考点 修饰 平行 having reached放句首，和主句主语the airline's board of directors构成合理语义；排除ABboth...and...构成平行关系，CE不平行，排除；答案D