【題目】

A. electric B. amount C. all the way D. turn down E. turn on

Our eyes need light to see. When we walk into the sun,【1】 a lamp, or look at a screen, light enters our eyes. There are many kinds of it. Some are visible, and some are not. Visible light comes in several different colors. Each color has a different【2】 of energy.

Blue light has the most energy, and it is everywhere. Of course, you can see it in the sky, but it is also common in【3】 lights. Computers, TVs, and phones all produce lots of blue light, too.

Our eyes are bad at blocking blue light because it is very strong. It can reach 【4】 to the backs of our eyes. That is a problem because too much blue light causes damage.

【答案】

【1】E

【2】B

【3】A

【4】C

【解析】

短文主要介紹與光有關(guān)的問題。

【1】句意：當(dāng)我們走進(jìn)太陽，打開燈，或者看著屏幕，光就會進(jìn)入我們的眼睛。

分析從句，or或者，是并列連詞；根據(jù)“we walk into the sun”和“look at a screen”可知，動詞皆為原形，故空格處應(yīng)是動詞原形；turn on打開，符合句意。故選E。

【2】句意：每種顏色都有不同的能量。

a different amount of不同數(shù)量的，修飾不可數(shù)名詞；energy能量，不可數(shù)名詞。故選B。

【3】句意：當(dāng)然，你可以在天上看到它，但在電燈中也很常見。

lights燈，名詞，故空格處應(yīng)是形容詞，作定語；electric電的，形容詞；electric lights電燈。故選A。

【4】句意：它可以一直延伸到我們的眼睛后面。

根據(jù)前句Our eyes are bad at blocking blue light because it is very strong.可知，藍(lán)光很強(qiáng)。此句進(jìn)一步說明藍(lán)光的強(qiáng)度，它可以一直延伸到我們的眼睛后面。all the way一直，符合句意。故選C。

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