题目内容：
We use plastic ________ (make) bags and bottles.
参考答案：
答案解析：
选择题：We use plastic ________ (make) bags and bottles.
- 题目分类：小升初
- 题目类型：选择题
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很久以前
很久以前
I usually go to school ______ seven o’clock. ( )
I usually go to school ______ seven o’clock. ( )
He didn`t go into detail on the subject ,he spoke ______.
He didn`t go into detail on the subject ,he spoke ______.
Has your teacher given you any advice______ your study?
Has your teacher given you any advice______ your study?
如图，四边形ABCD内接于⊙O，AB为⊙O的直径，过点C作CE⊥AD交AD的延长线于点E，延长EC，AB交于点F，∠ECD＝∠BCF．（1）求证：CE为⊙O的切
如图，四边形ABCD内接于⊙O，AB为⊙O的直径，过点C作CE⊥AD交AD的延长线于点E，延长EC，AB交于点F，∠ECD＝∠BCF．（1）求证：CE为⊙O的切线；（2）若DE＝1，CD＝3，求⊙O的