单项选择题—Wang Hong speaks English very well. — ______. She can talk with Americans freely.
单项选择题I hope we can fly to ______ moon one day.
单项选择题—I think science is more useful than art. —I disagree. I think art is ______ science.
单项选择题—Guess, how much does it cost —I think it costs ______ 15 and 20 dollars.
单项选择题计算机只懂机器语言,而现在人们一般用高级语言编写程序,将高级语言变为机器语言程序需经过( )。