问题
单项选择题
关于不同区域的牙本质的描述，正确的是
A．前期牙本质是位于近釉质牙本质界处最早形成的牙本质
B．在牙发育完成后，继续形成的牙本质是髓周牙本质
C．原发性牙本质构成牙本质的主体
D．牙根部最先形成的牙本质称罩牙本质
E．继发性牙本质与原发性牙本质的牙本质小管不连续
答案
参考答案：C
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关于不同区域的牙本质的描述，正确的是
A．前期牙本质是位于近釉质牙本质界处最早形成的牙本质
B．在牙发育完成后，继续形成的牙本质是髓周牙本质
C．原发性牙本质构成牙本质的主体
D．牙根部最先形成的牙本质称罩牙本质
E．继发性牙本质与原发性牙本质的牙本质小管不连续
参考答案：C
| 阅读理解。 |
| Hello! My name is Tina. I come from America, but I love China very much, because my mother is Chinese. Today is January 20th-my birthday. In the morning, my parents take me to a store and buy me a red skirt for me, because I like red very much. In the afternoon, we go to Disneyland (迪斯尼乐园). I have fun there. In the evening, we have a birthday party at home. My friends all come to my party and we eat a big cake. Thank my parents and friends for giving me a happy birthday! |
| 1. When is Tina's birthday? ____________________________________________________________. 2. What color does Tina like? ____________________________________________________________. 3. What do they eat in the evening? ____________________________________________________________. 4. Is Tina happy today? ____________________________________________________________. 5. 请将划线的句子翻译成汉语。 ____________________________________________________________. |