问题
解答题
写一写.
(1)2009年我国生产原油146000000吨,把横线上的数改写成用“亿”作单位的数,再保留一位小数.
(2)人类的遗传物质DNA是很长的链,最短的22号染色体也长达30000000个核苷酸,把横线上的数改写成以“万”为单位的数.
答案
(1)146000000吨=1.46亿吨≈1.5亿吨;
(2)30000000=3000万;
故答案为:1.46亿,1.5亿,3000万.
写一写.
(1)2009年我国生产原油146000000吨,把横线上的数改写成用“亿”作单位的数,再保留一位小数.
(2)人类的遗传物质DNA是很长的链,最短的22号染色体也长达30000000个核苷酸,把横线上的数改写成以“万”为单位的数.
(1)146000000吨=1.46亿吨≈1.5亿吨;
(2)30000000=3000万;
故答案为:1.46亿,1.5亿,3000万.
完形填空。 | ||||
A young officer (军官) was at railway station. He was on his 1 to visit his mother in another town, and he wanted to 2 her to tell her the time of his 3 , so that she could meet him at the station 4 her car. He looked in all his pockets but found that he did not have the right money for the telephone, so he went outside and looked 5 for someone to 6 him. At last an old soldier came by, and the young officer stopped him and said, "Have you 7 change (零钱) for ten pence?" " 8 ," the old soldier answered, and put his hand into his pocket. "I'll see whether I can help you." "Don't you know 9 to speak to an officer?" The young man said angrily. "Now 10 start again. Have you got change for ten pence?" "No, sir!" The old soldier answered angrily. | ||||
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