What does "lead time" in the last paragraph mean？
A. Hard training period.
B. Transitional period.
C. Time for leisure.
D. An easy life.
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用人单位安排劳动者延长劳动时间的，支付的工资报酬不应低于工资的（）。
A. 1
B. 1.5
C. 2
D. 3
攻击弱竞争者能更大幅度的扩大市场占有率和利润水平。 ()
A. 正确
B. 错误
Which of the following is NOT true based on the third paragraph？
A. Nine aspects can determine a baby's personality.
B. Stella Chess and Alexander Thomas are a couple.
C. The idea of telltale infant behavior. has not been put forward until recently.
D. Nine determinants of temperament appear at about four weeks.
Which kind of problems can be used in Dr. Bhattacharya and Dr. Sheth's research？
A. Theoretical brain-teasing problems.
B. Simple but rarely known problems.
C. Puzzling but realistic problems.
D. Simple but theoretical problems.
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