甲型强心苷苷元由多少个碳原子组成
A．20 B．23C．25 D．24E．27
参考答案：B
求下列各式中的x：
（1）x3=-0.125；（2）8x3=27；（3）x3+2=1；（4）（x-1）3=8；（5）27x3=343；（6）3x3+0.648=0．
life will continue on the earth for millions of years to come will depend on the problem of pollution can be solved.
A．How /whether
B．That/that
C．Whether / if
D．Whether / whether
