单项选择题

A "myograph" (Para. 2, Line 1) is an electronic instrument that __________.

A．is able to design new tools
B．measures the amount of energy used
C．enable people to see the muscular movements
D．visualizes electrical signals
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单项选择题
What is implied but not stated by the author is that __________.
A．breakfast does not affect performance
B．Dr. Pollitt is engaged in research work at an institution of higher learning
C．not eating breakfast might affect the health of children
D．Professor Bender once taught college courses in nutrition in London
单项选择题
What are involved in the design of a new tool according to the passage
A．Electronic instruments and a regular tool.
B．A human "guinea pig" and a regular tool.
C．Electronic instruments and a human "guinea pig".
D．Electronic instruments, a human "guinea pig" and a regular tool.
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