问题
单项选择题
关于一般恶性肿瘤的症状,下列哪项不对()
A.疼痛是早期的主要症状
B.局部常形成肿块
C.易形成溃疡
D.可引起小血管破裂出血
E.直接侵入周围器官
答案
参考答案:A
关于一般恶性肿瘤的症状,下列哪项不对()
A.疼痛是早期的主要症状
B.局部常形成肿块
C.易形成溃疡
D.可引起小血管破裂出血
E.直接侵入周围器官
参考答案:A
任务型阅。 根据以下信息,完成表格。 | ||||||||||||||||||||||||
1. I'm Freda. I like black. I have a pair of black shoes. I bought them in Beijing.They are very cheap, only 50 yuan. 2. I'm Joy. I like white. I have a white bag. I bought in Nanjing. It's 25 yuan. 3. I'm Jack. I have a red hat. I bought it in London. It's 20 dollars. I like it a lot, because I like red . 4. My name is Carol. I bought a sweater in Beijing. It's blue. I like blue. It's not cheap,108yuan. 5. My name is Tony. I have two pairs of green trousers.You know, I like green.They are form America. They cost me 50 dollars. | ||||||||||||||||||||||||
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下列实验操作不能达到其对应目的的是
编号 | 实验操作 | 目的 |
A | 取加入96mL水中 (水的密度近似看作1g/) | 配置4%溶液 |
B | 滴定实验中,用待测液润洗锥形瓶 | 避免造成误差使滴定结果偏低 |
C | 向溶液中滴入酚酞溶液,加热 | 证明升高温度能促进水解 |
D | 向盛有铜片的试管中加入浓硫酸,加热 | 证明浓硫酸具有强氧化性 |