摘要：8．如图所示.点P为∠AOB内一点.分别作出P点关于 OA.OB的对称点P1.P2.连接P1P2交OA于M. 交OB于N. P1P2=15.则△PMN的周长为 .
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如图所示，选出正确的单词填空。
1. Where is your mouth / hand? 
2. Snap your finger / legs.
3. Touch your face / eye.
4. Go to school / my house.
5. Close your book / pencil-case.
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2. Snap your finger / legs.
3. Touch your face / eye.
4. Go to school / my house.
5. Close your book / pencil-case.
看图，根据图片所示信息填空完成下面的句子。
例: It is about one hundred and twenty kilometres from A to B.
1. It is about ___________ ___________ ___________ ___________ kilometres from B to C.
2. It is about ___________ ___________ ___________ ___________ kilometres from A to C.
3. It is ___________ ___________ ___________ kilometres from A to D.
4. It is ___________ ___________ ___________ kilometres from A to E.
