When___________from the hill, the lake looks beautiful.
A. seeing
B. being seen
C. seen
D. to see
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Study the dialogue “Thank You for the Beautiful Flowers”and finish the tasks.[音频]Thank You for the Beautiful FlowersJoyce:Hello, Mary!Mary:Hi, Joyce. How are you1.______________now?Joyce:Oh, much better. Thank you. And thank you very much for the roses. They are so lovely!Mary:I'm2._____________you like them. They are from my own garden.Joyce:Yes, I know. Some of the flowers opened this morning, so beautifuland3._____________ .Mary:I know you love flowers, and I hope you'll4._____________keeping them.Joyce:I sure will. You are always so 5. _____________, Mary.Mary:I'm glad you like the flowers.
DAC是将()量转换成()量的器件,ADC是将()量转换成()量的器件。