在“研究凸透镜成像规律”的实验中，如图所示，把蜡烛放在a、b、c、d各点，调节光
题型：问答题
问题：
在“研究凸透镜成像规律”的实验中，如图所示，把蜡烛放在a、b、c、d各点，调节光屏的位置，则：（其中F为焦点，P为二倍焦距处）
（1）要将蜡烛、凸透镜、光屏三者中心调整到______；
（2）当屏上出现与物体等大的实像时，蜡烛放在______点上．
（3）在屏上出现的实像最大时，蜡烛放在______点上．
题型：问答题
阅读理解匹配题。
Some students are going to some different (不同的) places this weekend. Where are they going? Can you
find their places they want to go?
( )1 Sally: I have a pen pal in Wenchuan. Some days ago, I got a letter from her. She said she needed
some school things. I bought some and I want to post them to her. So this weekend, where will I go? Do you
know?
( )2. Ricky: I don't like weekends. For me, I have no weekends. My parents usually ask me to go to
evening school to learn English and other subjects. I always feel tired. That's why I don't like weekends.
( )3. Barbara: I love weekends. I can do what I want to do. I want to go to a quiet place to study because
Mid-term Exam (期中考试) is coming. I want to borrow (借) some books from that place and return (还) some
to that place. Do you know where I want to go?
( )4. Angle: This weekend will be an exciting one for me. My parents are going to take me to have
something special (特别的) in the place. It is said that we can try (尝试) some Indian food. Isn't it interesting!
( )5. Stella: I want to relax myself on weekends. This weekend, I want to do something different. I want
to go to this place. There, you can see many kinds of animals there. And children like to go there with their
parents.
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