雨果曾把厄运比做实验杯,他说()
A.厄运就是实验杯
B.意志薄弱的人能变得卑鄙无耻
C.坚强的人能够转为卓越非凡
D.运气不好,机会不公
参考答案:B, C
二维表中的列称为关系的______。
—_________students took part in planting trees on March .12 this year.
— Yes. It is said that ________ the students is 300.
A.The number of ; a number of
B.A number of; the number of
C.The number of; the number of
D.A number of; a number of