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问题 单项选择题

输往欧盟、美国、加拿大等国家或地区的盆景，报检时应提供（）

A．出境盆景场／苗木种植场检疫注册证

B．出境动植物检疫许可证

C．盆景／苗木允许出境证明

D．栽培介质的特许审批单

答案

参考答案：B

选择题

常温常压下NO2气体通入足量的水中，充分反应后，溶液的质量增加了54g。反应中有关物质的物理量正确的是（NA表示阿伏加德罗常数）

 一氧化氮硝酸转移的电子
A．1mol 2NA
B．11.2L1mol 
C． 63g2mol
D． 1mol  NA
 
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填空题


Motivation is "the driving force within individuals that impels them to action." And goals are the sought-after results (1) motivated behavior.
Motivation can be either positive or negative (2) direction. We may feel a driving force toward some object or condition, (3) a driving force away from some object or condition. For example, a person may be impelled toward a restaurant to fulfill a need, hunger, and away (4) an airplane to fulfill a need of safety. Some psychologists refer to positive drives (5) needs, wants or desires, (6) negative drives as fears or aversions (7) , though negative and positive motivational forces seem to differ dramatically (8) terms of physical and sometimes emotional activity, they are basically similar in (9) they both serve to initiate and sustain human behavior. (10) this reason, researchers often refer (11) both kinds of drives or motives as needs, wants and desires.
Goals, (12) , can be either positive or negative. A positive goal is one toward (13) behavior is directed and it is often referred to as an approach object. A negative goal is (14) from which behavior is directed away and it is sometimes referred to as an avoidance object. Since both approach and avoidance goals can be considered objectives of motivated behavior, most researchers refer to (15) types simply as goals. Consider this example. A middle-aged woman may wish to remain (16) attractive as possible. Her positive goal is to appear desirable, and (17) she may use a perfume advertised to make her irresistible. A negative goal may be to prevent her skin (18) aging, and therefore she may buy and use face creams. (19) the former case, she uses perfume to help her achieve her positive goal -- attractiveness; in the (20) case, she uses face creams to help avoid a negative goal -- wrinkled skin.
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