注意转移是指根据新任务，主动及时地把注意从一个对象转移到另一个对象上。注意转移的好坏在于转移的________。
参考答案：快慢
6.4349精确到0.01的近似数是______，精确到个位的近似数是______，保留4个有效数字时是______，精确到千分位时是______．
In Britain today women 44% of the workforce, and nearly half the mothers with children are in paid work.
A．build up
B．make up
C．take up
D．send up
