设函数f(x)=sinx+cos(x+π6),x∈R.(1)求函数f(x)的最小

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问题:

设函数f(x)=sinx+cos(x+
π
6
),x∈R.
(1)求函数f(x)的最小正周期及在区间[0,
π
2
]上的值域;
(2)记△ABC的内角A,B,C的对边分别为a,b,c,若f(A)=
3
2
,且a=
3
2
b,求角B的值.
考点:已知三角函数值求角任意角的三角函数正弦定理
题型:解答题
根据市场调查,某商品在最近的20天内的价格f(t)与时间t满足关系f(t)=
t+20(0≤t<10,t∈N)
-t+40(10≤t≤20,t∈N)
,销售量g(t)与时间t满足关系个g(t)=-t+30,(0≤t≤20,t∈N),设商品的日销售额为F(t)(销售量与价格之积).
(1)求商品的日销售额F(t)的解析式;
(2)求商品的日销售额F(t)的最大值.
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哪种肺炎易合并脓胸

A.金色葡萄球菌肺炎

B.腺病毒肺炎

C.呼吸道合胞病毒肺炎

D.支气管肺炎

E.支原体肺炎

题型:解答题

在场地总平面设计中,选择设计地面连接形式,要综合考虑的因素有( )。

A.自然地形的坡度大小

B.建筑物的使用要求及运输联系

C.场地面积大小

D.建筑场地的供水与供电

E.土石方工程量多少

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I still remember the last time I went to the playground with two of my children. It had rained during the night and the playground was very muddy (泥泞的). They had just put on clean clothes, so I was a little worried about the mud on the playground. It was not long before Kathy got her beautiful skirt dirty on the playground. She dug through the rocks. I was about to blame (指责) her for getting her clothes dirty when she ran towards me with a smile on her face. When she got to me, she handed me a little heart-shaped rock and said, “Here, Mom! Here is a heart for you —just because I love you! Keep it!” With tears in my eyes, I thanked her.

Should I blame her for getting her clothes muddy? No way! I still have that little heart-shaped rock. It is one of the best gifts that I have ever received. I realized that many times it was not necessary for us adults to worry about the small things our children did. Let them do what they’d like to.

I will spend a lot more time on the playground with my children. I’m sure I will learn a lot from them. It makes me think of the days when my grandfather told me, “You would not enter the kingdom of happiness until you pretended (假装) to be a small child.”

小题1:At first, the author wanted to blame Kathy because she __________.

A.ran on the playground

B.dug through rocks

C.gave her a muddy rock

D.got her clothes dirty小题2:The author was deeply moved by her daughter’s _____.

A.digging task on the playground

B.special way to show her love

C.smile on her face when running

D.love of the muddy playground小题3:From Paragraph 2, we can learn that the author thought parents should _________.

A.not worry about the small things their children do

B.allow kids to do whatever they like

C.keep the presents given by children

D.not give too much care to their own children小题4:The author’s grandfather’s words imply that _______.

A.children care more about happiness than adults

B.adults can not share children’s happiness

C.children may find happiness more easily in life

D.adults find it hard to know children’s happiness

题型:解答题

《物业管理条例》( )规定:物业管理企业雇请保安人员的,应当遵守国家有关规定。

A.第四十七条第二款
B.第四十七条第一款
C.第四十六条第一款
D.第四十六条第二款

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