African Americans ________ about 13% of the population of the United States.
A.account for B.get across C.engage in D.contribute to
A search group was organized to look for the university students _______ in the mountain.
A.trapping B.having trapped C.to trapped D.trapped
—You mustn’t tell ________ about the matter. It’s a secret between you and me.
—OK. I promise you.
A.anyone else B.no one else C.nobody else D.someone else.
阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。续写的词数应为150左右。
From the first day he entered my classroom, Willard P. Frank existed in his own world, shutting out his classmates and me. My attempts at building a friendly relationship with him were met with complete indifference. I could see that his classmates fared no better. Willard was strictly a loner who seemed to have no desire or need to break his silence．
Shortly after the Thanksgiving holiday, we received word of the annual Christmas collection of money for the less fortunate people in our school district. “Christmas is a season of giving,” I told my students. “There are a few students in the school who might not have a happy holiday season. By contributing to our Christmas collection, you will help buy food, clothing and toys for these needy people. We will start the collection tomorrow.”
When I called for the contributions the next day, I discovered that almost everyone had forgotten except for Willard P. Frank. The boy dug deep into his pants pockets as he walked slowly to my desk. Carefully, he dropped two quarters into the small container. “I don’t need milk for lunch,” he mumbled. For a moment, just a moment, he smiled. Then he turned and walked back to his desk.
That night, after school, I took our few contributions to the school principal. I couldn’t help sharing the incident that had taken place. “I may be wrong, but I believe Willard might be getting ready to become a part of the world around him,” I told the principal. “Yes.” he nodded. “And we might do well to have him share a bit of his world with us. I just received a list of the poor families in our school who most need help through the Christmas collection. Here, take a look at it.” As I gazed down to read, I discovered Willard P. Frank and his family were the top names on the list. Seeing this, I decided to do something for him.
假如你是李华，周末打算和同学去骑行锻炼，请给你校留学生Eric写一封邮件，邀请他参加，内容包括：
1. 具体安排;
2. 注意事项。
注意：1. 词数80左右；
2. 可以适当增加细节，以使行文连贯。
阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
A year 1. (divide) into altogether 24 solar terms by the Chinese lunar calendar. Start of Spring, the first solar term of the year, begins in early February. 2. lifts the curtain of spring, after which everything turns green and becomes 3. (energy).
Spring is the best season for kite-flying. With 4. available history of more than 2,000 years, the traditional folk activity can help build up one’s 5. (strong) and prevent disease. A breath of fresh air outside can release the dirty smell 6. (collect) in winter.
In China, an old legend goes 7. the egg can be set upright on the first day of the Start of Spring. But according to astronomers and physicists, 8. (set) the egg upright has nothing to do with time, but with mechanics. The most important thing is to shift the egg’s center of gravity to the 9. (low) part of the egg. In this way, the trick is holding the egg until the yolk (蛋黄) sinks as much as possible. For this, people should choose an egg about 4 or 5 days old, 10. yolk is likely to sink down.
