问题
单项选择题
下列哪个结构既在上纵隔又在后纵隔?()
A.食管
B.上腔静脉
C.下腔静脉
D.主动脉弓
E.降主动脉
答案
参考答案:A
下列哪个结构既在上纵隔又在后纵隔?()
A.食管
B.上腔静脉
C.下腔静脉
D.主动脉弓
E.降主动脉
参考答案:A
选择合适的单词补全句子。 | |
2.The bus is _____________. The bicycle is _____________. 3. They are singing a song. They are _____________. 4. The apple is _____________. The strawberry (草莓) is _____________. 5. The tea is _____________. The ice cream is _____________. |