有关脑脊液循环的描述,正确的是( )
A.经第四脑室侧孔入静脉
B.经中脑水管入大脑大静脉
C.经侧脑室脉络丛入静脉
D.经蛛网膜粒入静脉
E.经室间孔入第四脑室
参考答案:D
油管和油室
. To save class time, our teacher has ___ students do half of the exercises in class and complete the other half for our homework.
A.us
B.we
C.our
D.ours