在“探究凸透镜成像规律的实验”中，将蜡烛置于透镜前30cm处时，在另一侧的光屏上得到了一个倒立、放大清晰的像，现保持透镜位置不动，将蜡烛和光屏的位置对调，则光屏上（  ）

如图，正方形ABCD的边长为3，M为DC的中点，若N为正方形内任意一点（含边界），则$\overrightarrow{AM}$•$\overrightarrow{AN}$的最大值为____

     My parents used to tell me how important school was for me, but I didn't think so. I paid little attention to it. But one thing let me finally 1 what my parents meant.
     One day, when I   2   a mobile phone store, I saw an advertisement on its door. It was hiring new workers!
“Sir, are you hiring people?” I went   3  the shop and asked. “Yes, but you should be the man who we need,” the manager answered. He looked at me for a few   4 from head to foot. “Do you have a high school diploma(文凭)?” 5 he, “Or do you have any work experience?”
    I felt so ashamed and  6 that I didn't know what to say, so I just turned around and left. I could not fall asleep that night, and I thought a lot about my  7  . “I must go to school or I can’t do anything without a good education,” I  8 to myself silently. I never went back to the store again 9 I finished my study and got a diploma.
10 looked the same when I returned to the store: the same people and the same design. However, compared with last time, I had more  11  . The manager told me they needed new    12  . So it was a great chance for me.
    I 13  my diploma to the manager. He looked at it and said, “Great, you are in.”
    Now I am still working in the same store. With this experience, I always  14 people to attend school. Education helps you have a bright future. Now I am not worried about my future because I'm still   15in my spare time.

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Policeman: Now, Jimmy, did you get a good view of the accident?

Jimmy: Oh, yes. I was standing outside the bank building and I saw it quite clearly.

Policeman: Do you know what time it was?

Jimmy: Yes. ____ It was 2:45 exactly.

Policeman: Good. ____

Jimmy: Well, quite slowly --- about 10 miles an hour. It was coming up York Road. ____ But they were still red when he went over them.

Policeman: I see. ____ was it also driving slowly?

Jimmy: It was coming along Union Street about 30 miles per hour. It was a blue Toyota. ____

Policeman: Did you see what colour his traffic light was?

Jimmy: Yes, it changed to yellow just before he crossed it.

A. What about the car?

B. I checked my watch.

C. Didn't you see the car?

D. Now, how fast was the truck moving?

E. Was the car going beyond the speed limit?

F.I suppose(猜想) the truck driver knew the lights were going to change.

G. The driver stopped his car when he saw the truck crossing the street.