关于弹力和摩擦力的关系，下列说法正确的是（） A.若两物体间有弹力，则一定有摩擦力
题型：单项选择题
问题：
关于弹力和摩擦力的关系，下列说法正确的是（）
A.若两物体间有弹力，则一定有摩擦力
B.若两物体间有摩擦力，则一定有弹力
C.静摩擦力一定发生在静止的两个物体之间
D.滑动摩擦力一定发生在运动的两个物体之间
题型：单项选择题
阅读理解。
She Is Looking for Me
Mr. John and Mr. Brown work in the same office. One day Mr. John says to Mr. Brown, "I will
have a small party in our house on Monday evening. Would you and your wife like to come?"
Mr. Brown says, "Thank you very much. I'd love to, but let me ask my wife first." So Mr. Brown
goes to the other room and telephones his wife. Then he comes back and looks very worried.
"What's the matter?" asks Mr. John. "Is your wife there at home?"
"No," answers Mr. Brown, "She isn't there. My small son answers the telephone. I say to him,
'Is your mother there, David?' And he answers, 'No, she isn't in the house.' 'Where is she?' I ask.
'She is somewhere outside.' 'What's she doing?' 'She is looking for me.'"
1. _________ will have a small party at home on Monday evening.
A. Mr. John
B. Mr. Brown
C. Mrs. Brown
D. David
2. Mrs. Brown is looking for _________.
A. Mr. John
B. Mr. Brown
C. Mrs. John
D. David
3. The telephone is in _________ office.
A. Mr. Brown's
B. Mr. John's
C. the other
D. David's
4. How many people are there in the story?
A. 4
B. 5
C. 6
D. 7
5. Mr. Brown speaks to _________ in the telephone.
A. Mr. John
B. Mrs. Brown
C. David
D. himself