肾移植病人硬膜外阻滞，上界平面至少应达到（）
A.T4
B.T6
C.T8
D.T10
E.T12
参考答案：C
用所给词的适当形式填空。
1. It was raining __________ (heavy), and we didn't go to school.
2. Mao Zedong was the __________ (found) of the PRC.
3. Our math teacher asked us __________ (not use) calculators.
4. The book is __________ (interesting) one of all the books.
5. Mike __________ (watch) TV yesterday evening.
320年前的文献（1689），开创君主立宪制政体____________________________________________
