等高线地形图上，陡坡的地方（   ）

生活中常见的金属防护方法很多．下列对金属所采取的防护方法正确的是（　　）

1905 年春，中国现代化的两位先驱者严复与孙中山先生曾在伦敦就改造中国的问题进行辩论。严复主张渐进、启蒙，孙中山直言不讳地答道：“俟河之清，人寿几何？君为思想家，鄙人乃实行家也。”作为“实行家”，这一年孙中山(　　)

    Hello，I'm Danny．This is my day．I get up at seven o'clock every morning. I wash my face and get dressed(穿上衣服)．Then I have breakfast．After that I brush my teeth．I pack my bag and take nay lunch．I like sandwiches．I go to school by bus．I have four classes in the morning．I have lunch at twelve o'clock．Then I have two classes in the afternoon. I go home at half past three．I play with my friends or watch TV．Then I do my homework. I have dinner with my family．I have a shower and brush my teeth．I go to bed at eight o'clock．Busy day is finished．