问题
单项选择题
已知圆O1,O2的半径分别是r1=3,r2=5,若两圆相切,则圆心距O1O2的值是()。
A.2或4
B.6或8
C.2或8
D.4或6
答案
参考答案:C
已知圆O1,O2的半径分别是r1=3,r2=5,若两圆相切,则圆心距O1O2的值是()。
A.2或4
B.6或8
C.2或8
D.4或6
参考答案:C
任务型阅读。 (10 分) 阅读下列短文,根据短文中的内容完成表格。(每空一词 ) From: Lily @126.com To: Alice@yahoo.com.cn Sent: 10:40 a.m. June 16th Subject: My best friend Dear Alice, Thank you for your last letter. I enjoyed reading it very much . You tell me about your best friend. In this letter I will tell you about mine. Her name is Trudy. Trudy has long, dark brown hair and green eyes. She is 13 years old, the same age as me, but a little taller. We sit together in class and help each other with our schoolwork. We always go home together after school and walks in the park or play computer games for half an hour. Trudy likes to play the piano and she can play it well. I am learning to play the flute (长笛). We practice together every day. Trudy is always happy and helpful. I love to stay with her Lots of love, Lily
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