定义在R上的函数$f\left(x\right)$既是偶函数又是周期函数，若$f\left(x\right)$的最小正周期是$\pi$，且当$x\in 0,\frac{\pi }{2}$时，$f\left(x\right)=\sin x$，则$f\left(\frac{5\pi }{3}\right)$的值为（   ）

2015年暑假，小明和家人一起到拉萨旅游，下面是他对当时景观的描述，不可信的是（  ）

下列活动在内环境中进行的是（    ）

2016的倒数是（　　）

    This morning Jenny, Linda, Mary, Alice and Sally found five bags. Jenny found a brown bag in Classroom 208. In the bag is ____. Linda found a purple bag in Classroom 306.In the bag is ____. Mary found a green bag in Classroom 409.In the bag is ____.Alice found a red bag ____.In the bag is a yellow pencil. Sally found a blue bag ____.In the age is a watch.