一物体做匀加速直线运动，初速度为0.5m/s，第7s内的位移比第6s内的位移多4m，求：

选择方框内单词填空并将序号填写在横线上。

A. start to    B. to    C. past    E. have     F. half past

已知不等式$\frac{x-2}{ax+b}>0$的解集为$\left(-1,2\right)$，m是二项式${\left(ax-\frac{b}{x^2}\right)}^6$的展开式的常数项，那么$\frac{ma}{a^7+2b^7}=$(      )

根据短文内容，选择正确答案。

Every four years, the greatest athletes from all over the world get together in one city to take part in the world sports meeting—the Olympic Games. The holy flame (圣火) is carried from one place to the next. In 2008, the holy flame was carried to Beijing, the capital of China.

When Beijing was chosen as the host city to hold the Olympic Games in 2008, all the Chinese people were very happy, excited and proud. They showed their excitement in different ways when they heard the news. Some people cheered, jumped and shouted.

    In Beijing we built a new Olympic village with hotels for athletes and stadiums for matches.

    "One World, One Dream" is our slogan for the 29th Olympics. It expresses the wishes of 1.3 billion Chinese people for a peaceful and better world tomorrow.

小朋友你认识下面这些动物吗？这些动物各有几只脚,在下面的横线上写出来.

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