下列各组词语中，划线字的注音完全正确的一项是（    ）

阅读理解

    Many musicians meet and form a band（乐队）because they like to write and play their own music.They may start as a group of high school students and practise their music in someone's house.Sometimes they may play to passers-by in the street or underground so that they can get some money for themselves or pay for their instruments（乐器）．

    However,there was one band that started in a different way．It was called the Monkees and was formed in 1965．It began as a TV show．The TV show had planned to find four rock musicians who could act as well as sing．But they could only find one who was good enough．They had to use actors for the other three members of the band．

    Since some of these actors could not sing well enough，they had to ask for help from other musicians．So at first，the band just pretended(假装)to sing．Anyway,their performances(演出)were excellent and they got lots of fans．Each week on TV,the Monkees would pretend to play and sing songs written by other musicians．After a year or so，they became more serious about their work．They started to play and sing their own songs like a real band．Then they produced(制作)their own records and started touring and playing their own music．In the US they became even more influential and popular than the Beatles and sold even more records．

    However，the band broke up around 1970．But happily they reunited(重聚)in the 1980s．They produced a new record in 1996 to celebrate their time as a band．It was very successful．Today the Monkees are still making music for their millions of fans．

裉据材料内溶选择最佳答案。

通读短文，掌握其大意，然后在各小题所给的三个选项中，选出一个最佳答案。

    Sam is my new classmate. He is 1 American boy. He is from New York. He is thirteen.

    Sam often gets up at about 6: 30 on2. And he often 3 a cup of tea, an egg and some bread for his breakfast. Then he goes to school at 7: 30 a.m. and gets there 4 8: 00 a.m. . They have four classes in the morning and two in the 5. At 3: 50 p.m. they play games. He studies hard and studies 6. He likes English and is good at it. He teaches us 7 and we teach him Chinese. He can speak a little Chinese now, but not 8 . Mike is his good friend. They go home together(一起). He does 9 homework at home, but sometimes at school. On Saturday and Sunday, he likes 10 football games on TV. He often goes to bed at about nine.

函数$f\left(x\right)=\sin (\omega x+\phi ),(x\in R,\left|\phi \right|<\frac{\mathrm{\pi }}{2})$的部分图像如图所示，如果$x_1,x_2\in \left(-\frac{\mathrm{\pi }}{6},\frac{\mathrm{\pi }}{3}\right)$，且$f\left(x_1\right)=f\left(x_2\right)$，则$f\left(\frac{x_1+x_2}{2}\right)=$   （   ）