[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 the opposite problem--how to collect body heat. They have designed a collection system which utilizes not only body heat, but also 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--theaters and offices as well as classrooms--are more than amply heated by people and lights and sometimes must be air-conditioned even in winter. The technique of saving heat and redistributing it is called"heat recovery."A few modern buildings 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 has learned a great d
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 the opposite problem--how to collect body heat. They have designed a collection system which utilizes not only body heat, but also 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--theaters and offices as well as classrooms--are more than amply heated by people and lights and sometimes must be air-conditioned even in winter. The technique of saving heat and redistributing it is called"heat recovery."A few modern buildings 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 has learned a great d
A. The heat is supplied by human bodies only.
B. The heat is supplied by both human bodies and other heat-emitting objects.
C. The heat is supplied by both human bodies and conventional fuel.
D. The heat is supplied by human bodies, other heat-emitting objects, and conventional fuel.

[单项选择]Look at this man. What is he doing He’s carrying a very big box. The box is full of big apples, lie wants to put it on the back of his bike and lake it home. Can he do that No, I don’t think so. Wiry not Because the box is too full and too heavy. Look! What’s wrong He drops the box. Poor man!
The man is carrying a box full of big apples.
[A] True. [B] False.

[单项选择]Does he remember what he was doing（　）
A. by the time
B. just in time
C. in no time
D. at the time

[单项选择]Advanced technology has already pushed human being to edges, such as the production of weapons of mass destruction, the destruction of Ozone by Freon, and the application of clone. The heated debate over (67) cloning technique should be used in human reproduction must be considered as a serious (68) .
Clone, to a certain degree, is (69) to mankind. Such disease as Parkinsons will (70) be cured in the future in the hope of further (71) of clone. However, the (72) of this technology will bring human being unthinkable destruction.
(73) the declaration of the death of Dolly, we are more (74) of the inefficient procedure of clone. According to "Dolly’s false legacy", the incidence of death among offspring (75) by cloning is much higher than it is (76) natural reproduction--roughly 10 times as high as (77) before birth and 3 times as high after birth. And
A. all
B. full
C. whole
D. total