[填空题]For a teenager, no matter whether he is all athlete or not, he should take in 2,000 to 5,000 calories per day.

[单项选择] He could not start the engine,no matter（） hard he had tried.
A. when
B. where
C. what
D. how

[单项选择]

Passage one
Every human being, no matter what he is doing, gives off body heat. The usual problem is how to dispose of it. But the designers of the Johnstown campus of the University of Pittsburgh set themselves the opposite problem of how to collect body heat. They have designed a collection system which utilizes not only body heat, but the heat given off by such objects as light bulbs and refrigerators as well. The system works so well that no conventional fuel is needed to make the campus's six buildings comfortable. Some parts of most modern buildings-theatres and offices as well as classrooms-are more than amply heated by people and lights and sometimes must be air-condition even in winter. The technique of saving heat and redistributing it is called “heat recovery”. A few modem building recover heat but the University’s system is the first to recover heat from some buildings and re-use it in others.
Along the way, Pitt
A. was difficult to collect
B. came in a variety of forms
C. was difficult to get rid of
D. tended to be absorbed by physical objects

[单项选择] Every human being, no matter what he is doing, gives off body heat. The usual problem is how to dispose of it. But the designers of the Johnstown campus of the University of Pittsburgh set themselves about the 51 problem ------how to collect body heat. They have designed a collection system which utilizes not only body heat, but the heat given off by such objects as light bulbs and refrigerators as well. The system works so well 52 no conventional fuel is needed to make the campus’ six buildings comfortable. 　　Some parts of the buildings ------ theatres and offices 53 classrooms ------ are more than amply heated by people and lights and sometimes must be air-conditioned 54 in winter. The technique of 55 heat and redistributing it is 56 “Heat recovery”. A few modern buildings recover __57__, but the university’s system is the first to recover heat 58 some buildings and reuse it in 59 . Along the way, Pitt has learned a great deal about some of its heat producers. The 60 a studen
A. woman
B. female
C. girl
D. boy