问题
单项选择题
（）成长期是指卷烟产品经过一段时间的宣传和培育后，逐渐被零售客户和消费者所接受，销量迅速增长，品牌知名度和影响力逐渐增强的时期。
A、导入期
B、成长期
C、成熟期
D、衰退期
答案
参考答案：B
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（）成长期是指卷烟产品经过一段时间的宣传和培育后，逐渐被零售客户和消费者所接受，销量迅速增长，品牌知名度和影响力逐渐增强的时期。
A、导入期
B、成长期
C、成熟期
D、衰退期
参考答案：B
Passage Three
What did the Norwegian Foreign Ministry do in response to this kidnapping
A．They prepared the ransom demanded by the kidnappers so as to rescue the victims.
B．They demanded that the local Nigerian authority should be held accountable to this incident.
C．They conducted investigation so as to collect more information concerning the kidnapping.
D．They sent negotiators to talk the kidnappers into releasing the hostages.
C(s)＋H2O(g)；△H＜0以l mol CO和2 mol H2为起始反应物，tl时达到平衡，生成0．6mol H2O(g)。t2时改变反应条件，化学反应速率(v)与时间(t)的关系如图所示。下列叙述正确的是