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问题 填空题
已知点P为椭圆
x2
3
+y2=1在第一象限部分上的点，则x+y的最大值等于______．
答案

解；设x=

3
cosθ，y=sinθ，（0＜θ＜
π
2
）

则x+y=

3
cosθ+sinθ

=2（sin

π
3
cosθ+cos
π
3
sinθ）

=2sin（θ+

π
3
）≤2

（当且仅当θ=

π
6
时取等号）

故答案为 2

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请参考给定的资料4、6、9、16、20等，假定你是某乡政府安全工作负责人，辖区局部范围内突发重大自然灾害，请你拟定相应的处置方案。 要求所拟处置方案的措施在五条以上，并且切实可行，系统性强。字数在200字左右。
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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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