题目

下列离子方程式正确的是（    ） A．碳酸钡与盐酸反应2H＋＋BaCO3===Ba2＋＋H2O＋CO2↑ B．氢氧化钡溶液与稀硫酸混合Ba2＋＋SO＋H＋＋OH－===BaSO4↓＋H2O C．金属钠与水的反应 Na＋H2O===Na+＋OH－＋H2↑ D. 铜片插入硝酸银溶液中：Cu + Ag+ = Cu2+ + Ag 答案：A根据短文内容，完成填空。 Abraham Lincoln was born in Kentucky in 1809. His mother died when he was ten years old. Later, his family moved to Illinois and his father remarried. The family was poor, so they had to struggle just to live. In Illinois, there were neither teachers nor schools, but Lincoln's stepmother encouraged him to study. He learned to read and write while working on the farm.At twenty-one, Lincoln left home. He soon received a law license and became a lawyer. People trusted him and began to call him “Honest Abe”.During the following years, he took a more active part in polities. Soon he was not only a highly respected lawyer but also a well-known politician. He was elected the sixteenth president of the United States in 1860, and in the next year the Civil War broke out.The Civil War was between the southern states that wanted to leave the Union and form their own country, and northern states that wanted to keep all the states as one country. The southern states wanted to keep the laws that allowed them to own slaves. Both the northern states and President Lincoln wanted to get rid of those laws. On April 9, 1865, the Civil War ended and all slaves were set free.Less than a week later, on April 14, 1865, Abraham Lincoln was shot at the Ford Theater in Washington D.C. He died the next day from his wounds.Abraham LincolnBirth★He was born in 1809.His family★His mother died when he was .★His stepmother was to him and encouraged him to study.Unusual Experience★A farmer, a lawyer, a politician and the sixteenth of the United States.Achievement★The Civil War broke out between the southern states and the states.★All slaves were set free when the Civil War .★“Keeping all the states as one country” came true.