1. In 1666 Isaac Newton was ___.
A. a famous doctor
B. an assistant in a lab
C. a university teacher
D. a university student

2. What is the Chinese meaning of the words “ray of light”?
A. 光线
B. 光圈
C. 光速
D. 灯光

3. The prism can split up the white into ___.
A. less than five different colors
B. five different colors
C. seven different colors
D. more than seven different colors

4. Which of the following is RIGHT according to the sentences underlined (划线)?

5. Which of the following is NOT true according to the passage?
A. Newton did his experiment on a sunny day.
B. Newton continued his study at home during his holidays.
C. Newton can see seven different colors in his experiment.
D. If we put five different colors together, we can get the white light.

七、首字母填空 I wonder whether there is any girl or boy who does not like to see a rainbow in the sky. It is so beautiful. There is a (1) s___, saying that whenever you see a rainbow you should run at once to the place where it touches the ground, and there you would find a pot of gold. Of course it is not (2) t___. You could not find the pot of gold or its end. No matter how far you run, it always seems (3) f___ away. A rainbow is not a thing which we can feel with our (4) h___ as we can feel a flower. It is only the (5) i___ of light shining on raindrops. The raindrops catch the sunlight and break it up into all the wonderful (6) c___ which we see. It is called a rainbow perhaps because it is (7) m___ up of raindrops and looks like a bow (弓). That is (8) w___ we can never see a rainbow in a clear sky. We see a rainbow only when there is rain in the air and the sun is shining brightly (9) t___ the clouds. Every rainbow has many colours in the same (10) o___. The first or the top colour is always red, and the next comes orange, then yellow, and last of all, blue. A rainbow is indeed one of the wonders of nature.