We put a strong stick near the young tree _______ make it straight. [ ]

A. so that

B. in order that

C. in order to

D. that

人参与皂荚同用，皂荚可以降低人参的补气作用，人参对皂荚而言，这种配伍关系属（）

A.相须

B.相使

C.相杀

D.相畏

E.相恶