问题
单项选择题 A1型题
牙震荡是指（）
A.牙周膜轻度损伤，不伴有牙体缺损
B.牙周膜轻度损伤，伴有牙体缺损
C.牙周膜重度损伤，不伴有牙体缺损
D.牙周膜重度损伤，伴有牙体缺损
E.仅有根尖周膜的损伤
答案
参考答案：A
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牙震荡是指（）
A.牙周膜轻度损伤，不伴有牙体缺损
B.牙周膜轻度损伤，伴有牙体缺损
C.牙周膜重度损伤，不伴有牙体缺损
D.牙周膜重度损伤，伴有牙体缺损
E.仅有根尖周膜的损伤
参考答案：A
| 阅读理解。 | |||
| 完形填空。 One day, Jenny is 1____________ the bus. She is looking 2____________ the window of the bus. She sees a big green tree. There is a baby and her mother 3____________ behind Jenny. The baby is crying. She is loud. There is a boy and his father sitting in front of Jenny. They 4____________ talking. Jenny is going to 5____________ her grandma and grandpa. She loves them very much.
( ) 6. There is a boy and his father sitting behind Jenny. ( ) 7. The baby is crying and she is very loud. ( ) 8. Jenny loves her grandma and grandpa very much. |