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【简答题】
Hormesis（毒物兴奋效应）：在低剂量时有（）效应，在高剂量时有（）效应。
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【单选题】In the first paragraph, the word 'apparatus' means ______ .
A.
lung
B.
Liver
C.
equipment
D.
machine
【单选题】What are there in the library except books?
A.
Pictures, machines and hotels.
B.
Movies, machines and old stamps.
C.
Pictures, movies and experts.
【单选题】The main point of the first two paragraphs can best be illustrated as______.
A.
when a machine like a rotary engine malfunctions, it is the technologist who is best equipped to repair it
B.
a telephone is a complex instrument designed by technologists using only nonverbal thought
C.
the designer of a new refrigerator should consider the designs of other refrigerators before deciding on its form
D.
the distinctive features of a suspension bridge reflect its designer's conceptualization as well as the physical requirements of its site
【单选题】A communcitions protocal is a set of（）for exchanging information over a network.
A.
machine
B.
software
C.
rules
D.
hardware
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