问题 单项选择题

复合树脂充填洞形制备特点()

A.底平壁直,洞形必须达到一定的深度

B.点线角应圆滑,洞缘角应制备短斜面

C.应制备典型的箱状洞,并设计良好的固位形

D.洞缘角应成直角,不宜在洞缘角制备短斜面

E.无需去净无基釉,但要有良好的抗力形

答案

参考答案:B

阅读理解

The marathon(马拉松) in my town usually takes place in hot weather. My job was to follow the runners to help those who needed medical help. “We should stay behind the last runner, so take it slowly,” I said to the driver, Doug.

As it began, the front runners started to disappear(消失). Then I noticed a woman in blue running shorts and a white T-shirt. “ Doug, look!” We knew we were watching our “last runner”. Her feet turned in , yet her left knee turned out. Her legs were so crippled(畸形的) that it seemed impossible for her to be able to walk. How could she run a marathon?

We watched in silence as she slowly moved forward. We would move forward a little bit, then stop and wait for her. Then we would slowly move forward a little bit more. As I watched her try to put one foot in front of the other, I found myself breathing for her. I wanted her to stop, and at the same time, I hoped that she wouldn’t. Finally, she was the only runner left in sight. When the finishing line came into sight, we found the cheering people had all gone home. She slowly crossed through the line and lifted her hands, full of happiness.

I do not know the woman’s name, but since that day she has become a part of my life. For her, it was about finishing what she had set out to do, no matter what. When I think things are too difficult and want to say “I just can’t do it”, I think of the last runner. Then I realize how easy the task before me really is.

小题1:When does the marathon usually take place in the writer’s town?

A.In spring.

B.In summer.

C.In autumn.

D.In winter.小题2:The last runner had problems with her      .

A.head

B.back

C.legs

D.arms小题3:Why did the woman take part in the marathon?

A.To win a good prize

B.To beat the other runners

C.To make friends with others

D.To finish what she had decided to do

单项选择题 A1/A2型题