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问题 填空题
Read and complete.
...  er
old           
young   
small
heavy
thin
答案
...  er
oldolder           
young    younger
smallsmaller
heavyheavier
thinthinner
单项选择题

足三阳经行走方向的规律是

A．从手走头

B．从胸走手

C．从足走胸

D．从头走足

E．从足走腹
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单项选择题

PDM includes four types of dependencies or precedence relationships:（）.The completion ofthe successor activity depends upon the initiation of the predecessor activity.

A.Finish-to-Start

B.Finish-to-Finish

C.Start-to-Start

D.Start-to-Finish
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