问题
单项选择题
继发性精索静脉曲张最常见于（）
A.肾癌
B.睾丸癌
C.结肠癌
D.前列腺癌
E.输尿管肿瘤
答案
参考答案：A
解析：继发性精索静脉曲张常见于肾癌和腹膜后肿瘤，其压迫精索内静脉，癌栓栓塞肾静脉，使血流回流受阻，可以引起继发性的精索静脉曲张。
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继发性精索静脉曲张最常见于（）
A.肾癌
B.睾丸癌
C.结肠癌
D.前列腺癌
E.输尿管肿瘤
参考答案：A
解析：继发性精索静脉曲张常见于肾癌和腹膜后肿瘤，其压迫精索内静脉，癌栓栓塞肾静脉，使血流回流受阻，可以引起继发性的精索静脉曲张。
| 用所给词或词组的正确形式填空（每个只能用一次，其中有三项是多余的）。 | |
2. John and Jack are both seven. They are ________________. 3. The ________________ contains hundreds of letters. 4. Shall I ________________ at the next stop? 5. He can't do it himself. Will you please help ________________? 6. Where is Mike? He ________________ under the tree. 7. My brother ________________ to school in the morning. 8. We ________________ on the coming Children's Day. 9. Last week, we went to the farm and ________________ carrots there. 10. There is a new supermarket near my home. The ________________ in it are beautiful and delicious. |