按土地的地貌特征分类可将土地分为平原、丘陵、山地、高地，这属

搜题请搜索小程序“爱下问搜题”

问题单项选择题

按土地的地貌特征分类可将土地分为平原、丘陵、山地、高地，这属于下列哪一种土地分类系统（）。

A、土地自然分类系统

B、土地评价分类系统

C、土地利用分类系统

D、土地使用分类系统

答案

参考答案：A

单项选择题 A1型题

以下哪种情况不宜行金属烤瓷全冠修复（）。

A.牙体缺损较大而无法充填治疗者

B.氟斑牙

C.前牙错位、扭转

D.青少年恒牙

E.变色牙

填空题

词汇运用。

1. After hearing the bad news, he seemed __________(happy).

2. When I see the sun, I have the feeling of __________(warm)

3. Don't make much noise in the classroom. Many students __________(revise) for the coming exam.

4.We should help each other, because everyone needs __________(other) help.

5. What you said has made him feel even __________(sad). You must say sorry to her!

6. It's reported that billions of money __________(raise) to help and support the people

in Si Chuan these days.

7.—What do you study so hard for? —__________(enter) a better high school.

8. All the family got together to celebrate the old man's __________(ninety) birthday.

9. The boys were so excited that they __________(simple) couldn't wait to open the gift box.

10. On my way to school, I found something shiny __________(lie) on the ground.