问题
单项选择题 B型题
本质上反应增龄变化的是（）
A.原发性牙本质
B.继发性牙本质
C.前期牙本质
D.管周牙本质
E.生长线
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
本质上反应增龄变化的是（）
A.原发性牙本质
B.继发性牙本质
C.前期牙本质
D.管周牙本质
E.生长线
参考答案：B
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| I live in a big city with a lot of homeless people. Luckily there're small ways of helping them and you needn't have a lot of__1__. One way to help is to buy their monthly magazine.__2__doing this one day, I got to__3__a young homeless man. He was often__4__the magazine at the train station. He was a poor farmer from another country. After a while, I discovered that his _5__was close to mine. It__6__that we were born in the same month. I met him last year__7__after his birthday, and after congratulating(祝贺) him, without__8__, I asked if he had had a good day. He__9__and said that he hadn't really celebrated. I felt so __10__. I just couldn't bear the thought of (不敢想) this nice, young man being__11__on his 25th birthday with no presents, no cake, nothing! So I went home and looked in my yarn(纱线) basket.__12__for me, I had enough yarn__13__. I set to work and knitted (编织) a__14__for the young man. The yarn had become a little dirty__15__I didn't knit very often. Then I washed the yarn so the scarf would be__16__ when he got it. I met him on my own birthday as I was going shopping. I had__17__to meet him so I had__18__the scarf and a piece of my own birthday__19__around with me. He was very happy with these gifts and so was I. The__20__in his eyes was the best present he could have given me! | |||
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