题目

下列容器不能盛放硫酸铜溶液的是(     )。 A . 塑料容器 B . 铁制容器 C . 木质容器 D . 玻璃容器 答案:B阅读理解     Benjamin Banneker was born a few months before another great American-George Washington.Benjamin was black, but he was not a slave.He and his mother and his grandmother were free.     Benjamin's grandmother came from England.In America she got a job and worked for many years to pay for her boat trip across the ocean.After working many more years, she saved enough money to buy a farm.Benjamin lived with her for a while.She taught him to read and write and do arithmetic.     Benjamin's neighbors knew that he was clever.They were not surprised when he built a large wooden clock.He made each piece after studying a small pocket watch.The clock made him famous, for it was one of the first clocks built in America.People from other places began to send hard problems of all kinds for Benjamin to settle.     Thomas Jefferson learned of Benjamin Banneker's ability to settle hard problems.He asked Banneker to help build the city that was to be the capital of the United States-Washington, D. C.  Banneker worked hard on the plans for the city.He marked where the  streets and buildings-the Capital (国会大厦), the White House, and many others?should be built.     Later, L'Enfant, the Frenchman who had designed the new city, had a  quarrel, and went back to France in anger.He took all of the plans with him.The workmen couldn't build without any plans to follow.      For a while it seemed that the plans for the capital might have to be  changed.But Benjamin Banneker remembered the plans he had helped draw.He drew each again just as he once had built each piece of his clock.      If it weren't for Benjamin Banneker, Washington, D. C.might look very different from the way it does today.1. Benjamin Banneker is remembered to this day mainly because________.A. he made one of the first clocks in AmericaB. he used to be an assistant to L'Enfant, who had designed the city WashingtonC. he designed the city Washington when L'Enfant leftD. he was able to build the city Washington as L'Enfant left with his plans2. When Banneker built a large wooden clock,________.A. people in America showed no surpriseB. his name spread all over AmericaC. he became the first man in America to build a clockD. people came from other places to congratulate him3. Thomas Jefferson asked Banneker to help build the city Washington because he was told that     Banneker was________.A. famous     B. clever C. hardworking   D. serious4. In building the city Washington, Banneker showed ________.A. he had a good memory   B. he was never tired of workingC. he feared no difficultiesD. he was good at drawing
科学 试题推荐