设0＜a＜1，函数$f\left(x\right)={\log }_a\left(a^{2x}-2a^x-2\right)$，则使f(x)<0的x的取值范围是(    )

    Do you know 2022World Cup will be held in Qatar（卡塔尔）．And FIFA（国际足联） has made a big decision．The 2022Qatar World Cup will be held in November and December．It is the first time FIFA has moved the event from its traditional summer to winter．

    According to the decision，the 2022World Cup will start on November 21．The final will take place on December18，one week ahead of Christmas．The tournament will last 28days，half a week shorter than usual．

    FIFA said，"This is an important step for us．December18，2022is a Sunday，and it's National Day in Qatar，so it fits perfectly．"

    Many people disagree that Qatar has the chance to held the 2022World Cup，since summer temperatures is very high﹣sometimes，the temperature may be about 50℃．So the country has an idea to move it to winter．At last FIFA gave the chance to Qatar．

    Although the change is good for the players，there is still much opposition．The biggest opposition comes from the major European leagues（欧洲联赛），because the new time will be just Europe's club season．FIFA said they will try their best to make things go well．

下列晶体性质的比较中，正确的是(　　)

读图回答下面小题．

请根据鸟卵和鸟的胚胎发育的结构示意图回答下列问题：