已知：如图，AB是⊙O的直径，CD是⊙O的弦，且AB⊥CD，垂足为E，联结OC， OC=5．若CD=8，求BE的长；若∠AOC=150°,求扇形OAC的面积．
. It takes me five minutes ____ home by bike.
----Where is Mary ? -----She ___ a speech on Chinese art in the hall.
The flower smells ____ and I like it very much.
---What did the teacher say to you just now ? --- She asked _____.
Help ____ to some apples, children.
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