关于青春期的叙述错误的是（ ） A．青春期的显著特点是身高突增 B．青春期是医生

Which is true on the subarachnoid space in the vertebral canal（）。

A.lies between dura matter and arachnoid

B.up to subarachnoid space in the skull by the foramen magnum

C.down the the height of the fifth sacral vertebral

D.terminal cistern is formed by the space below the second sacral vertebral

E.the fluid in it can communicate with that in the center canal of spinal cord directly

高1.6m的中学生站在竖直的平面镜前3m处，像跟人的距离为______m，人以1m/s的速度走向镜面，则镜中的像相对于人的速度是______m/s，像高______（变大/变小/不变）．

促进社会和谐是我国发展的重要目标和必要条件。要按照以人为本的要求，从解决关系人民群众切身利益的现实问题人手，( )。

A．更加注重经济社会协调发展，加快发展社会事业，促进人的全面发展

B．更加注重社会公平，使全体人民共享改革发展成果

C．更加注重民主法制建设，正确处理改革、发展、稳定的关系，保持社会安定团结

D．提高人民素质，力口强精神文明建设

E．不断提高对外开放水平

Directions:

You are to inform Mrs. Benton that you will have to break the dinner engagement.

Write a note to

1) make an apology,

2) state your reasons and

3) hope to meet in the near future.

You should write about 100 words on ANSWER SHEET 2. Do not sign your own name. Use "Li Ming" instead. You do not need to write the address.