[填空题]You look as if you（）(see) a ghost.

[单项选择]

F: If you look this way, you will see the beautiful scenery of the Great Wall.
M: How nice. Which part of the Wall was built during the Ming dynasty
F: The one where we took photos this morning.

What is the woman in the conversation（）
A. A guide.
B. A historian.
C. A traveler.

[填空题]If you look to the right, you will see a road of great ______ (wide).

[填空题]If you look to the left, you will see a river of great (wide)（）.

[填空题]You look as if you（）(see) a ghost.

[单项选择]Speaker A: Good to see you. You look more fit and better.
Speaker B:（）
A. Thanks. I had a lot of exercise and drank vegetable juice every day.
B. Sorry. I don’ t think I am more fit. Actually, I caught a bad cold.
C. Yes. I’m much more fit. And you
D. I’m glad to see you too, though I’ m not much better that ever befor

[单项选择]Speaker A．Good to see you. You look more fit and better.
Speaker B:_________
A. Thanks. I had a lot of exercise and drank vegetable juice every day.
B. Sorry. I don’t think I am more fit. Actually, I caught a bad cold.
C. Yes. I’m much more fit. And you
D. I’m glad to see you too, though I’m not much better that ever before.

[单项选择]Let’s look at the bag. Can you see ______ "s" on the corner of ______ bag
A. a; a
B. a; the
C. an; the

[单项选择]Did you ever wonder why you see the colors you do or if other animals see the same colors that you see We see light that bounces off of things around us. When the light enters our eyes, special cells tell our brains about the light. These cells are called photoreceptors. Light is made of little bits called photons. When the sun shines, trillions and trillions of these little bits of light fall on the earth. The photons bounce off of almost everything and some of them enter our eyes. Those bits that enter our eyes allow us to see. So, where does the color come from Starting in the 1600s with Sir Isaac Newton, scientists have believed that there are different kinds of photons. Different types give rise to our sense of colors. The different photons are said to have different wavelengths. Sunlight contains all the different wavelengths of photons. The visible wavelength colors can be seen when you look at a rainbow. Raindrops acting as natural prisms produce the colors.
A. Cornea.
B. Lens.
C. Retina.
D. Optic nerve.