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【单选题】
注意是心理活动对一定对象的指向和集中。它具有指向性和集中性两个特征。A.
感觉
B.
感受性
C.
知觉
D.
感觉阈限
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【单选题】大中型商业保险购买者明显不同于小型商业保险消费者（包括个人保险购买者），下列选项中属于大中型商业保险购买者特征的是（）。
A.
往往需要适合其特殊需要的保险保障计划而非传统的定式保险合同
B.
在无充分保险的情况下对损失的承受能力非常有限
C.
他们往往处于单一场所
D.
大多数人视保险为一种商品
【单选题】This passage is mainly about ______.
A.
the functions of carbon dioxide and water
B.
the role of water in a growing plant
C.
the process of simple sugar formation
D.
the synthesis of water with carbon dioxide
【单选题】Oxygen and carbon dioxide cross the respiratory membrane by the process of:
A.
counter-current exchange
B.
diffusion
C.
active transport
D.
oxygen – carbon dioxide pump
【多选题】关于传统型寿险的说法，正确的有( )。
A.
定期寿险全部是储蓄性产品，有现金价值
B.
在保额相同的情况下终身寿险的保费一般高于定期寿险
C.
两全保险一般属于储蓄性保险产品
D.
年金保险是生存保险的一种特殊形态，目的是给遗属提供生活和教育费用
E.
年金保险提供死亡风险保障，常被看作是人寿保险的“变种”
【单选题】The passage suggests that the effects of volcanic carbon dioxide on the environment differ from those of sulfurous gases in that
A.
carbon dioxide tends to alleviate environmental haze, while sulfurous gases usually increase it
B.
carbon dioxide tends to increase temperatures by trapping sunlight, while sulfurous gases tend to decrease temperatures by blocking it
C.
carbon dioxide tends to have an effect on the environment, while sulfurous gases for the most part do not
D.
sulfurous gases have played an even more significant role than carbon dioxide in pushing environmental temperatures outside the habitable range
E.
sulfurous gases tend to decrease the level of solar radiation outside the earth's atmosphere, while carbon dioxide plays only a negligible role
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