胰腺的后方紧邻的结构是：()
A．脾静脉
B．腹主动脉
C．下腔静脉
D．十二指肠横部
E．胆总管
参考答案：A
The teacher, together with his students __________ discussing Writing Skills that __________ newly published in China.
A. are; were B. is ; were C. are; was D is ; was
十进制数29.625用二进制表示为 (6) 。
A．101001.1010
B．1010001.101
C．11101.1010
D．11011.101
