诊断急性混合细胞白血病（MAL）除具备白血病的一般特征外，最重要的方法是（）
A.电子计算机断层摄影检查
B.细胞化学染色检查
C.双表型检查
D.骨髓组织病理检查
E.遗传学和分子生物学检查
参考答案：C
解析：急性混合细胞白血病依白血病细胞来源及表达不同分为双表型与双系型。①双表型：在混合细胞白血病中，确定有大于或等于10％的恶变细胞，既有淋巴细胞系，又有髓细胞系特性。②双系型：同时有两种或多种分别表达髓系或不同淋巴系标记的白血病细胞。
| 阅读下面短文。根据短文内容，在表格中第1至第8小题的空格里填上适当的单词，使信息完整。 每空填一个词。 | ||||||||
| Smoking is one of the worst things kids can do to their bodies. Every single day, about 4,000 kids between the ages of 12 and 17 start smoking. Most junior school students don't smoke-only about 1 in 10 does. Most senior school students don't smoke either-about 1 in 4 does. But why do those who smoke ever begin? There's more than just one simple answer. Some kids may start smoking just because they're curious. Others may like the idea of doing something that grown-ups don't want them to do. Still others might think smoking is a way to act or smoking makes them look like an adult. Luckily, fewer people are starting to smoke than a few years ago. Maybe that's because more and more people have learned that smoking can cause cancer and heart disease. Sometimes kids don't worry about what future illness they might get. Nicotine and other poisonous (有毒的) chemicals in tobacco cause lots of diseases, like heart problems and some kinds of cancer. If kids smoke, it will hurt their lungs and hearts each time they light up. It can also make it more difficult for blood to flow in the body, so smokers may feel tired. The longer they smoke, the worse the damage becomes. The human body is smart, and it knows when it's being poisoned. When kids try smoking for the first time, they often cough a lot and feel pain or burnt in their throats and lungs. This is their lungs' way of trying to protect them. Also, many kids say that they feel sick to their stomachs or even throw up (呕吐). | ||||||||
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