妇女参加工作比例的升高将使总劳动供给曲线向左移动。 ()
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All the following statements are true EXCEPT that ______.
A. getting off to work with a minimum effort helps save one's energy
B. many couples quarrel because they don't understand the energy cycle
C. people can't change the energy cycle, but they can adapt themselves to it
Dr. Kleitman can explain why people feel most energetic at different time in a day
A．abuseB．utilizeC．adjustD．accumulate
A. abuse
B. utilize
C. adjust
D. accumulate
Three years ago, researchers reported that cancer ______.
A. was caused by normal cells
B. sometimes resulted from internal actions of the victim's own body
C. was a hereditary disease
D. was a form. of malignancy
Which of the following is not identical as industrial property？
A. Trademarks.
B. Inventions.
C. Trade secrets.
D. Productive materials.
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