交叉存储器实质上是一种( )存储器,它能( )执行( )独立的读写操作。
A.模块式,并行,多个
B.模块式,串行,多个
C.整体式,并行,一个
D.整体式,串行,多个
参考答案:A
— Does your Dad quit smoking, Jenny?
— Yes, but he ____ for almost ten years. [ ]
A. smoked
B. was smoking
C. has smoked
D. had smoked
某中学地理环保小组的同学,积极投身环保活动,做了大量有益环保的事情。他们[ ]
A.是在进行科学研究和创造
B.做了法律提倡和鼓励做的事情
C.做了法律要求做的事情
D.是在不务工业,荒废学业