问题
单项选择题
诊断急性白血病的主要依据是
A．出血、贫血、感染三大症状
B．肝、脾、淋巴结肿大
C．全血细胞减少
D．白细胞数剧增或剧减
E．骨髓象见较多原始、早幼白细胞
答案
参考答案：E
解析： 血液系统疾病的确诊均有赖于血象和骨髓象的检查，急性白血病骨髓象见大量原始、幼稚细胞是确诊的关键。
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诊断急性白血病的主要依据是
A．出血、贫血、感染三大症状
B．肝、脾、淋巴结肿大
C．全血细胞减少
D．白细胞数剧增或剧减
E．骨髓象见较多原始、早幼白细胞
参考答案：E
解析： 血液系统疾病的确诊均有赖于血象和骨髓象的检查，急性白血病骨髓象见大量原始、幼稚细胞是确诊的关键。
Scientists said that in the past 100 years, as the global(全球的) temperatures went up by 0.74℃, the temperature in North China has climbed 1.4℃ in only 50 years. China needs to cut down carbon dioxide(二氧化碳) emission(排放)，because it’s the main reason for global warming. The good news is that China has seen the importance of going green. China has decided to cut energy use down by 20% and pollution emission by 10% in the 11th Five-Year Plan. Can you slow down global warming? Sure! You and your family can take some steps. Here are some pieces of advice to help you save the earth. Wear used clothes. It means that you save the energy when you wear your brother’s, sister’s or dad’s old T-shirts. Change your light bulbs(灯泡). Use energy-saving light bulbs. And don’t forget to turn off the lights when you leave a room and turn off your television and computer when they are not in use! Take a bus. Taking a bus saves a lot of oil(石油) every year. Say no to plastic bags. The next time your parents go to the market, ask them to use baskets. Open the windows. Don’t use the air conditioner(空调). Let some fresh air in. When you have to use the conditioner,setthetemperature higher in summer and lower in winter to save energy.
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