If it had not been your help, we _____（）
A. wouldn’t succeed
B. would succeed
C. wouldn’t have succeeded
D. should succeed
查看答案
Could you give me a _____（）
A. advice
B. news
C. answer
D. piece of advice
About the spinal cord, which description are correct（）
A. It lies in vertebral canal
B. It continuous with pons at level of foramen magnum
C. It has cervical and lumbosacral enlargement
D. It can be divided into 33 segments
E. The gray matter lies in the center
The cervical enlargement（）
A. from C1 to C4 spinal cord segments
B. from C5 to C8 spinal cord segments
C. associates with the nerve roots that make up the cervical plexus
D. associates with the nerve roots that make up the brachial plexus
E. from C1 to C8 spinal cord segments
Which are the basic components of the reflex arc（）
A. receptor
B. central nervous system
C. afferent neuron
D. efferent neuron
E. effector
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