2.The root cardi means

A. 　heart

B. 　kidney

C. 　testis

D. 　pituitary

E. 　thymus

A. 　pl

B. 　p

C. 　s

D. 　n

E. 　u

A. 　spinal cord and bone marrow

B. 　spinal cord

C. 　brain

D. 　bone marrow

E. 　spinal cord and brain

A. 　compound word

B. 　vowel

C. 　combining form

D. 　prefix

E. 　acronym

A. 　muscular and skeletal system

B. 　circulatory and urinary system

C. 　nervous and sensory system

D. 　brain and heart

E. 　urinary and reproductive systems

A. 　root

B. 　suffix

C. 　prefix

D. 　combining vowel

E. 　compound word

A. 　a prefix and suffix only

B. 　a prefix,a root,and a suffix

C. 　a prefix and root only

D. 　two or more roots

E. 　a root and suffix only

A. 　German

B. 　Latin

C. 　Greek and Latin

D. 　German and Greek

A. 　pet

B. 　wide

C. 　some

D. 　under

E. 　ran

A. 　k

B. 　he

C. 　s

D. 　se

E. 　r