题目

四冲程内燃机工作时，机械能转化成内能的冲程是          （     ）A  吸气冲程。   B  压缩冲程。  C  做功冲程。    D 排气冲程。  答案：B解析: 【小题1】Among the patients that poor girl was          ( terrible) ill.【小题2】The old scientist devoted all her time she had to         (develop) the western parts of China.【小题3】He has decided to have a party for his wife’s _______(forty) birthday.【小题4】All the students _____________ (divide) into four groups and then they went on hiking with four teachers.【小题5】An old man was found ___________ (die) in the street yesterday.【小题6】The police believe these footprints are one of the _____________ (thief).【小题7】You have no choice but _________(work) hard if you want to enter your ideal school.【小题8】While my mother    (cook)dinner ,I got home. 【小题9】These comic books _______ are more or less worth reading. (it)【小题10】The more he thought of it, ________________(excite) he felt.