[单项选择]

Look on the Bright Side

Do you ever wish you were more optimistic, someone who always (51) to be success- ful Having someone around who always (52) the worst isn’t really a lot of (53) . We all know someone who sees a single cloud on a sunny day and says, "It looks (54) rain. " But if you catch yourself thinking such things, it’s important to do something (55) it.
You can change your view of life, (56) to psychologists. It only takes a little effort, and you’ll find life more rewarding as a (57) Optimism, they say, is partly about self-respect and confidence, but it’s also a more positive way of looking at life and all it has to (58) Optimists are more (59) to start new projects and are generally more prepared to take risks.
Upbringing is obviously very important in forming your (60) to the world. Some people are
A. opinion
B. attitude
C. view
D. position

[单项选择]

Look on the Bright Side

Do you ever wish you were more optimistic, someone who always (51) to be success- ful Having someone around who always (52) the worst isn’t really a lot of (53) . We all know someone who sees a single cloud on a sunny day and says, "It looks (54) rain. " But if you catch yourself thinking such things, it’s important to do something (55) it.
You can change your view of life, (56) to psychologists. It only takes a little effort, and you’ll find life more rewarding as a (57) Optimism, they say, is partly about self-respect and confidence, but it’s also a more positive way of looking at life and all it has to (58) Optimists are more (59) to start new projects and are generally more prepared to take risks.
Upbringing is obviously very important in forming your (60) to the world. Some people are
A. counted
B. expected
C. felt
D. waited

[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 sec. 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. Red, white, and blue.
B. Red, green, and yellow.
C. Red, green, violet.
D. Red, green, blue.