下列孔子语录中,说明乐于切磋的是()。
A、就有道而正焉,可谓好学也已。
B、三人行,必有我师焉。
C、有朋自远方来不亦乐乎。
D、知之为知之,不知为不知,是知也。
参考答案:A
报废的斜井应当填实封堵,或者在井口以下斜长()m处砌筑1座砖、石或者混凝土墙,再用泥土填至井口,并加()。
Directions:
The following chart shows the percentage of near-sighted students in Chinese schools. Write an essay of 160~200 words based on the chart. In the composition you should:
1) describe the situation
2) analyze the causes, and
3) give your comments.