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【单选题】
下列有关化学毒物蓄积毒性作用的含义，不正确的是（）A.
化学毒物连续或反复多次与机体接触
B.
化学毒物的吸收速度超过生物转和排泄速度时，在体内贮存
C.
是发生慢性中毒的基础
D.
可以分为物质蓄积和功能蓄积
E.
物质蓄积和功能蓄积不能同时存在
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【简答题】He seemed (stun) _______ by the news that the former millionaire is heavily in debt now.
【单选题】This passage centers mainly on ______ .
A.
harnessing energy through chemistry
B.
our last source of power
C.
how water power is produced
D.
the amount of solar energy that can be utilized
【多选题】Basic Energy is needed to ( ) .
A.
Keep the heart beating
B.
Keep the lungs functioning
C.
Maintain body temperature
D.
For the numerous chemical reactions taking place in body cells
E.
associated with digestion, absorption, transport, and storage of nutrients
【单选题】The basic energy source of living things comes from the ( ).
A.
chemical energy
B.
carbohydrate
C.
cholesterol
D.
energy of sunlight
【简答题】He seemed (stun)________by the news that former millionaire is heavily in debt now.
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