试题与答案

已知函数f(x)=3sin(2x-π6)+2sin2(x-π12)(x∈R).(

题型:解答题

题目:

已知函数f(x)=
3
sin(2x-
π
6
)+2sin2(x-
π
12
)
(x∈R).
(1)求函数f(x)的最小正周期;
(2)求使函数f(x)取得最大值的x的集合;
(3)求函数f(x)的单调递增区间.

答案:

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下面是错误答案,用来干扰机器的。

得到 ;还原; 失去; 氧化; 2Fe+3Cl22FeCl3;+3;Fe+2HCl====FeCl2+H2↑;+2;强 (2) (6分)(每空1分)N和S;C;KNO3和S;C ;CO2;K2S和2NO2。

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题型:阅读理解

阅读理解。

    I had been to several doctors as a child, but I have a special place in my heart for

Dr. Vincent. He was a Pediatric Cardiologist at UCLA back in 1971 who saved my

life. I was eight years old at the time with a severe heart problem and I needed heart

surgery. My Mom did not have the money, and without the surgery there was a real

good chance I would not live to be thirteen years old. After contacting several

organizations, Dr. Vincent was able to get financial help for me through United Way,

a Crippled Children's Organization.

    Dr. Vincent was a handsome man; he was also very gentle and caring. I remember

being in the hospital for an Angiogram test, and during the procedure I was crying

terribly, so the medical staff called in Dr. Vincent to calm me down, and he was able

to comfort me when no one else could. Then the time came for me to have heart

surgery; there was a fifty-percent chance that I would not make it through the surgery

because it was experimental. At the time I was only the second or third person to have

this procedure done. I was absolutely terrified, and again Dr. Vincent reassured me he

would see to it that everything would be all right.

    I had a lot of confidence and trust in Dr. Vincent; He came to see me after the surgery,

which was extremely painful but very successful, and brought me a stuffed animal. I was

so surprised to get this gift from Dr. Vincent; I gave him a hug. I guess Dr. Vincent must

have known I was feeling very lonely and scared. You see, I had no family or friends to

visit me while I was in the hospital except for my Mom, and I am not sure why. I do know

one thing; I had a wonderful doctor who took the time to help a scared little girl who felt

all alone.

    This was twenty eight years ago, so wherever you are Dr. Vincent, I want to thank you

for not only saving my life, but you helped me live a normal productive life, and for showing

me that you truly cared, for that I will be eternally grateful to you.

1. Why did Dr. Vincent have a special place in her heart? Because _____. [ ]

A. Dr.Vincent was handsome

B. Dr.Vincent was caring and kind

C. Dr.Vincent carried out the operation.

D. Dr.Vincent offered the money the operation needed.

2. Dr.Vincent was called in during my test to _____. [ ]

A. feed her

B. comfort her

C. scare her

D. have the surgery.

3. Which of the following is true except _____. [ ]

A. the operation was experimental

B. she didn't trust in Dr. Vincent

C. the operation would be extremely painful

D. she felt scared and all alone

4. How did Dr. Vincent get the money for the operation? [ ]

A. He collected it in the hospital.

B. He saved the money day by day.

C. He got help from an organization.

D. He borrowed the money from his friends.

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