答案及解析：
　　答案：1. B 2. D 3.D 4.C 5.B 6.B 7. C 8. D 9.C 10. D
　　【解析】
　　1. 同位语从句。that引导从句作orders的同位语，解释orders的具体内容。主句：They received orders. orders内容如下：The work be done right away.
　　2. 同位语从句。that引导从句作news的同位语，解释news的具体内容。主句：The news surprised us greatly. news的内容如下：He was kidnapped.
　　3. that引导从句作information的同位语，解释information的具体内容。主句：Information has been put forward. information的具体内容为：More middle school graduates will be admitted into universities.
　　4. that引导从句作word的同位语，解释word的具体内容。主句：Three days later, word came.
　　word的具体内容为：Our country had sent up another man-made satellite.
　　5. that引导从句作promise的同位语，解释promise的具体内容。主句：Along with the letter was his promise. promise的具体内容为：He would visit me this coming Christmas.
　　6. 此题为故意考查大家是否能辨别同位语从句与其他从句使用that的区别而设置。并不考查同位语从句。第一空为定语从句，why和that都可引导定语从句修饰the reason；第二空为表语从句，根据句意“……的理由是”只能选择that，如果because或why就意为“……是因为”句意不通，所以，答案为B。
　　7. that引导从句作a warm thought的同位语，解释a warm thought的具体内容。主句：A warm thought suddenly came to me. a warm thought的具体内容为：I might use the pocket money to buy some flowers for my mother's birthday．
　　8. 同位语从句that we’ll never know what a UFO is- not ever作a feeling 的同位语，解释a feeling 的具体内容。that连接同位语从句时，只起连接作用，不作从句的任何成分。
　　9. that引导从句作a message的同位语，解释a message的具体内容。a message的具体内容为：The meeting won't be held tomorrow.
　　10. that引导从句作thought的同位语，解释thought的具体内容。主句：The thought worried him. thought的具体内容为：He might fail in the exam.