问题
单项选择题
人工拌水泥混凝土混合物的顺序为（）。
A．砂子、水泥干拌后，再掺石子干拌，最后加水拌和
B．砂子、石子干拌后，再掺水泥干拌，最后加水拌和
C．砂子、水泥、石子、水一起拌和
D．砂子、石子、水泥干拌后，再加水拌和
答案
参考答案：A
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人工拌水泥混凝土混合物的顺序为（）。
A．砂子、水泥干拌后，再掺石子干拌，最后加水拌和
B．砂子、石子干拌后，再掺水泥干拌，最后加水拌和
C．砂子、水泥、石子、水一起拌和
D．砂子、石子、水泥干拌后，再加水拌和
参考答案：A
Complete the following passages with the words or phrases in the box. Each word or phrase can only be used once (将下列单词或词组填入空格。每空格限填一词，每词或词组只能填一次): (共8分)
小题1: means “one who offers his or her services.” There are many different ways in which people can volunteer, 小题2: taking care of sick people, working in homes for homeless children, and picking up garbage from beaches and parks. Volunteers may work within their own countries or in other countries. They are often people with a strong wish to help those who are less fortunate than themselves. Volunteers don’t 小题3: any kind of pay. At the 小题4: of volunteering is the idea that one person may have the ability to offer services that can help other people. Tracy, a good friend of mine, however, recently came back from India with a new idea of what being a volunteer means. She worked for two and a half weeks in one of Mother Teresa’s homes in Calcutta. The following is her story. |