下列各组中字形全对的一组是（　　）

下列属于缓慢氧化的是（    ）

为验证蜗牛嗉囊中的消化液具有分解纤维素的作用，某同学进行了如下实验：用刀片切取一小薄片菠菜的叶柄制成临时装片，并在显微镜下观察细胞形态。之后，从盖玻片的一侧滴以蜗牛嗉囊中的消化液，在盖玻片另一侧用吸水纸吸引，重复几次。一段时间后在显微镜下观察，结果发现细胞形态发生了变化。下列各项叙述中，与实验结果没有直接关系的是                        （  ）

“分类”是化学学习和研究的重要方法之一，下列分类中正确的是（   ）

从方框中选择恰当的句子补全下面对话。（其中有两项是多余的选项）

A: Hey, Lisa! My friends and I were just sharing memories of junior high school.

B: Wonderful, Frank. ____

A: It's so cool. I think it has been fun. Do you think so?

B: Yeah! I've enjoyed every year of junior high school.

A: ____

B: Of course, I do. One of my memories is that I lost my watch in Grade 7. ____

A: Did you find it at last?

B: ____ Sam helped me find it. I was so thankful.

A: Oh. I remember my P.E. teacher best.

B: ____

A: Mr. King. He gave us clear instructions so that we'd be safe when playing sports.

B: I think he was really perfect.

A: It made me quite sad. B: Who was your P.E. teacher? C: Do you have any special memories? D: No, I didn't. E: What do you think of the school life? F: Yes, I did. G: It was wonderful.