导致绵羊妊娠毒血症的主要原因是（）
A.母羊怀双羔
B.母羊怀三羔
C.母羊缺乏运动
D.胎儿过大
E.母羊营养不良
参考答案：E
把下列句子按正确的顺序组成一组问路的对话。
a. But where's the bus stop?
b. Excuse me. Where's the library, please?
c. It's near Zhongshan Road.
d. Thank you.
e. You can take No. 10 bus there.
f. It's over there.
g. How can I get there?
普拍枋
