根据短文理解，选择正确答案。

    There are fifty students in our class. There are twenty-four boys and twenty-six girls. Some students live near the school, and some others live far from school. About half of the students usually come to school by bike. They often get to school at a quarter to seven. About fifteen students often come to school by bus. They often get to school very early, too. Another ten students come to school on foot. Their homes are near the school, but they are often late for school, because they get up late.

近一年来，我市已形成媒体曝光、市民举报、监管部门问责、領导督导、全民参与“治霾、共治，共享”的局面。全市形形色色、大大小小的污染源因此无处遁形，一一被惩戒,这表明（    ）

①“防霾治霾”目标已经实现    ②保护环境人人有责

③府履行了治理环境的职责      ④新闻媒体发挥了监督作用

东南亚唯一的内陆国是（    ）

看拼音写词语。

下列相关实验不能达到预期目的的是(     )