新斯的明最强的作用是
A．兴奋胃肠道平滑肌
B．兴奋膀胱平滑肌
C．兴奋骨骼肌
D．缩小瞳孔
E．增加腺体分泌
参考答案：C
Last week, only two people came to look at the house, _______ wanted to buy it.
A．none of them
B．both of them
C．none of whom
D．neither of whom
DNA中的一段5’’-AGTCTGACT-3’’序列等同于RNA中的哪一段（）。
A、5’-AGUCUGACU-3’
B、5’-UGTCTGUTC-3’
C、5’-UCAGUCUGA-3’
D、5’-AGUCAGACU-3’
