轨道检查车检查线路区段整体不平顺(均值管理)的动态质量用轨道质量指数(TQI)评定。
参考答案:对
I have a pen pal. He is from America. __1__ name is Jack Smith. Jack can speak English and__2__ French. He wants to learn Chinese, __3__ he thinks it is too difficult.
He lives in Boston. He is twelve years __4__ this year. He likes pandas __5__ , because he thinks pandas are very lovely. Jack often goes to the __6__ to see pandas with his friends. The pandas are __7__ China.
He wants __8__ an actor like Li Lianjie, and he __9__ very hard. We often write to each other. He often __10__ me about his school life and his friends. I am happy to have this friend.
小题1: A. Her B. His C. My
小题2: A.a lot B. many C. a little
小题3: A. or B. but C. so
小题4: A. old B. young C. big
小题5:A. much B. very C. very much
小题6: A. school B. zoo C. supermarket
小题7: A. in B. to C. from
小题8:A. to be B. to have C. be
小题9: A. plays B. studies C. lives
小题10:A. says B. speaks C. tells
急性龋的临床表现为()
A.多见于中、老年人
B.病变进展较平稳
C.龋坏牙本质着色深
D.龋洞内腐质湿软
E.进展与全身情况无关