女性，38岁，健康查体发现右前上纵隔椭圆形阴影，边界清晰，密度

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问题单项选择题

女性，38岁，健康查体发现右前上纵隔椭圆形阴影，边界清晰，密度均匀，与周围组织界线明显，首先考虑诊断可能是（）。

A．胸腺瘤

B．淋巴瘤

C．神经源性肿瘤

D．心包囊肿

E．支气管囊肿

答案

参考答案：A

单项选择题

美国、加拿大采用的MLS系统类型是（）。

A.全国性的MLS系统

B.企业内部的MLS系统

C.企业之间的MLS系统

D.独家代理的MLS系统

填空题

根据句意及首字母提示补全单词。

1. W I go, my pet dog is always after me.

2. C plants can be eaten, but few people eat them.

3. I'm sure he could a success because he spent so much time on it.

4. Jim isn't b than others , but he works hard. So he can get good grades.

5. We are working hard at English to get a high l .

6. Our English teacher often tells us the i of learning English.

7. It is important to e your ideas to others well.

8. I didn't know his meaning, his h is difficult to understand .

9. In this school, three q of the students are from country.

10.So many big trees were blown down by the strong t .