Studies show that the things that contribute most to a sense of happiness cannot be bought, ________ a

good family life, friendship and work satisfaction.[ ]

A. as for  

B. in view of

C. in case of  

D. such as

水泥土搅拌桩用于处理（），或者在腐蚀性的环境中以及无工程经验的地区使用时，必须通过现场和室内试验确定其适用性。

A.泥炭土

B.有机质土

C.pH值小于4的酸性土

D.塑性指数大于25的粘土

E.砂土