下列哪个光学仪器可以在光屏上形成倒立放大的实像                        (    )

①一定的文化离不开一定的物质载体

②中华文化源远流长、博大精深

③传承传统文化是文化创新的根本动力

④科技是培育民族凝聚力的重要因素

短文改错

    During the summer holidays, I thought I should do anything meaningful instead of touring. So I got a job at fast food restaurant and worked there for a cleaner. I worked 7 hours a day for three week. The job was hard and boring and seemed endless, it made me so tired that I nearly left it halfway. Therefore, I stuck to it with determination. Every day I start off for work early in the morning and got to home late in the evening. Finally, I finished the job before the new school term began. Now, I understand that labor means. I consider it a successful experience, which is worth remembered forever.

根据短文理解，选择正确答案。

    “Cool” is a word with many meanings. Its old meaning is used to express a temperature that is a little bit cold. As the world has changed, the word has had many different meanings. “Cool” can be used to express feelings of interest in almost everything.

    When you see a famous car in the street, maybe you will say. “It's cool.” You May think, “He's so cool,” when you see your favorite football player.

    We all maximize(扩大)the meaning of “cool”. You can use it instead of many words, such as “new” or “surprising”. Here's an interesting story we can use to show the way the word is used. A teacher asked her student to write about the waterfall(瀑布) they had visited. On the student's paper was just the one sentence, “It's so cool.” Maybe he thought it was the best way to show what he saw and felt.

    But the story also shows a scarcity(缺乏)of words. Without “cool”, some people have no words to show the same meaning. So it is quite important to keep some credibility(可信度).Can you think of many other words that make your life as colorful as the word “cool”? I can. And I think they are also very cool.

下列各句中，划线的词语使用正确的一句是（    ）