— ______. He never( 从不) eats it.
A:Yes, he does
B:No, he doesn't
C:I don't know
—Yes. The last train for Guangzhou________at seven fifteen in the evening.
原有1克、3克、5克和7克的砝码各一个,丢掉一个砝码后,再也无法一次称出9克、12克的重量,丢掉的是几克的砝码?
发展两岸关系、实现和平统一的基础是坚持一个中国原则。( )