原发性支气管肺癌的常见组织类型为A．腺癌 B．小细胞肺癌 C．

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问题单项选择题

原发性支气管肺癌的常见组织类型为

A．腺癌

B．小细胞肺癌

C．大细胞肺癌

D．混合性癌

E．鳞癌

答案

参考答案：E

解析：原发性支气管肺癌常见的组织类型是鳞状细胞癌。

填空题

用动词的适当形式填空。

1. I don't know if he (come) tomorrow. If he (come), I will tell you.

2. He (learn) two thousand English words by the end of last year.

3. When I saw her, she was busy (write) a letter.

4. Last night I (invite) to my teacher's home for dinner.

5. The workers are made (work) fourteen hours a day.

填空题

在数据库的三级模式体系结构中，外模式与概念模式之间的映像，实现了数据库的【4】独立性。