PEN PAI WANTED

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• 方程sin(x+pai/3)=m/2在大于等于0小于等于pai上有两个解,求m的取值范围?
• 关于x的方程x2+4xsina+atana=0有两个相等实根,1.求a取值范围,（2）当a=7/4时,求sin(pai/4+a)
• (1/2)her father told her he________.A.bought her a pen.B.would buy her
• 50.The Great Wall in China is one of the wonders of the world.Wonders固定的吗,surprises,amusements,greats 可不可以?51.I am going to hang a new picture on this wall.Suspend也有悬挂之意,可否替代?52.The criminal was hanged for the crimes he had committed.这里的hang是什么意思53.The mountain village cannot be reached by telephone yet.Reached可以用arrived at 替代吗,get to 是固定的吗?54.He wanted to turn sand to gold.to是表目的吗?55.The monster turned out to be a man in a blanket.56.The toy was repa
• Mr.Jenkins lived in the country,and one day he wanted to go to an office in the city.He found the address,got into his car and drove to the city.He drove straight to the office without any trouble and stopped his car in front of the office.He locked (锁)his car and wanted to go into the office,but suddenly he turned around and went back to his car.He phoned his wife and said,“Excuse me,I’ve locked my keys in my car.Please bring me your keys.”Mrs.Jenkin
• 数学题问答（三角函数）已知sinα的值,在区间[﹣pai/2,pai/2]内求角αsinα=√3/2; sinα=﹣√2/2; sinα=﹣1/2; sinα=1; sinα=1/4; sinα=﹣5/8; sinα=0.688; sinα=﹣0.123.已知sinα的值，在区间[﹣pai，pai]内求角αsinα=√2/2；sinα=﹣√2/2
• 函数f(x)=(2+cosx)/(2-cosx)的值域为?函数y=xinx^2+2cosx在区间[-2/3pai,a]上最小值为-1/4,则a 的取值范围是?负三分之二派
• How ( )legs are there in a bee?Six.How ( )is it from your home to your school?A bout 4km.How ( )do you have Olympic Math?Twice a week.How ( ) is this pen?It's 18 yuan.
• sin²pai/4+sin²pai/3+4cos²2pai/6等于多少?sin90度是不是可以缩掉?结果sin45度 还是sin345度?应该是 1/2+3/4+1=1 对么?
• 扇形的圆心角是144,扇形的面积是4pai平方厘米,则扇形所在圆的面积是多少?结果保留pai
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