4 . 听下面一段对话，根据所听内容填空。

M: So, what’s your     1     for coming to the gym?

W: I want to     2     for my wedding. I’m a size 14 now, and I’d like to be a size 12, so I want to lose about 10 kilos.

5 . How I wish to go to the bottom (底部) of the sea for an adventure (探险)! There are quite a lot of beautiful fishes swimming here around me and they are in different shapes and colors. A big whale or a shark might appear. Frightening, isn’t it? But most fishes are friendly and won’t hurt you if you do not attack them. It would be great fun just to watch the fishes quietly and even play with them. — from Qin Yixing.

Last night, I had a dream. I was flying to Africa. Once I reached the land, I found a jeep to the grasslands. I was about to get into the jeep when I saw a few snakes in front of me. Luckily, they went away without hurting me. Soon I happened to find some nice giraffes and a crowd of zebras. On my way back, there was something wrong with the jeep. I was so scared that I fell with the jeep upside down. Much to my surprise, a helicopter (直升飞机) came in time to rescue me. What a dream adventure! — from Zhang Liang.

9 . In high school, I did a scientific experiment. The experiment made me _______ that science could teach us a lot. It teaches us the _______ so we know where we are from. That day, I firmly _______ to be a scientist. Ever since that day, I have studied harder _______ in all my science-related subjects. After school, I do much research on how I can become a _______ scientist in the future.

One of my _______ in becoming a scientist is Barbara McClintock, who was awarded the 1983 Nobel Prize in Physiology or Medicine. At 25, she already had her PhD in botany. After that, she started her _______ as the leader in the development of maize cytogenetics (玉米细胞遗传学) and she _______ herself to that research for the rest of her life.

If I am lucky and given the _______ to achieve my ambition as a scientist, I want to be like Doctor McClintock. She ________ something that helped the other scientists ________ the things about genetics (遗传学).

I know I will be able to achieve my ________ as long as I put my heart and perseverance into it. If I achieve my goal, I will share my ________ of success with all the kids who also love science and want to become scientists. My future will be as ________ as the stars in the night sky. However, my future is still far. I will make the most of the ________ to achieve my greatest ambition of becoming a scientist.