各种生物之间由于食物关系而形成的一种联系叫做食物网．（判断对错）

没有红灯的约束，哪有绿灯的畅通。 （    ）

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    Jack is a 13-year-old boy.

    One day, his father asks him, "How many letters are there in the alphabet(字母表)?"

    "24." He says.

    "24?" His father asks loudly, "Are you sure?"

    "Sorry, I don't know." Answers the son.

    "You don't know? You are in school for 7 years and you don't know how many letters there are in the alphabet?" The father is very angry(生气的).

    His son says, "No. But let me ask you a question, dad. You often go to the post office(邮局). Please tell me how many letters there are in the post office."

已知函数$f\left(x\right)=A\sin (\omega x+\phi )$（其中$A>0,\left|\phi \right|<\frac{\mathrm{\pi }}{2}$）的部分图象如图所示，为了得到g(x)=sin2x的图象，则只需将f(x0的图象（   ）