Jenny nearly missed theflight________doing too much shopping.    [ ]

A. as a result of            

B. on top of    

C. in front of              

D. in need of

吸收脑脊液的主要部位是()

A．蛛网膜

B．侧脑室脉络丛

C．脑膜

D．蛛网膜颗粒

E．脑实质