槲寄生横切面的最外层为
A．木栓层 B．表皮 C．后生表皮D．后生皮层 E．次生皮层
参考答案：B
5个8相加写成乘法算式5×8．______．
The singer and the dancer ____ come to the meeting. [ ]
A. has
B. have
C. are
D. is
