题目

萃取溴水中的溴单质，可作萃取剂的是（） A . 苯 B . 水 C . 酒精 D . 乙醛 答案：A根据句意，用括号中所给词的正确形式填空，每空填一词。1．There are 15 ______ (loaf) of bread on the table.2．Our classroom is close to ______ (they). 3. The classmates are ______ (friend) to each other in my class. 4．If they win the game, they will laugh ______ (happy). 5．It is really fun ______ (go) to the fashion show. 6．There are some girls ______ (sing) English songs. 7．The exchange students ______ (go) to the Summer Palace tomorrow. 8. Our teachers ask us ______ (not play)on the street.