问题
单项选择题 A1/A2型题
若某肿瘤可检测到CD20，则该肿瘤可能属于（）。
A.肝细胞癌
B.B细胞肿瘤
C.胃癌
D.T细胞肿瘤
E.卵巢癌
答案
参考答案：B
解析：CD20是B细胞淋巴瘤的特异性抗原，约95%的B细胞淋巴瘤可表达CD20，治疗B细胞淋巴瘤的分子靶向药物利妥昔单抗(美罗华)即为CD20单抗。
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若某肿瘤可检测到CD20，则该肿瘤可能属于（）。
A.肝细胞癌
B.B细胞肿瘤
C.胃癌
D.T细胞肿瘤
E.卵巢癌
参考答案：B
解析：CD20是B细胞淋巴瘤的特异性抗原，约95%的B细胞淋巴瘤可表达CD20，治疗B细胞淋巴瘤的分子靶向药物利妥昔单抗(美罗华)即为CD20单抗。
把正确的选项填入空白处，使短文意思完整。（5分） In many countries, people produce power from coal, but it is very dirty and causes acid rain. Some countries use nuclear energy to produce power.1 . To solve the energy problem, people all over the world are looking for new ways to produce power. China is one of the first countries in the world to use biogas technology. 2 . This renewable energy is used in people’s everyday life. 3 . Now there are electric vehicles in many countries. They are very efficient and cost very little to run. 4 , there will be an increase in electricity needs if they are widely used. In China, the best—known maglev train is the German—built one in Shanghai. The train can reach a top speed of 431 km per hour.5 . There is no wheel noise, because there are no wheels. However, maglev guide paths are much more expensive than traditional steel railways.
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