【多选题】Coplete the sentences with the words below. Scientists use 1_______ beams to measure the distance between the Earth and the Moon. Mary has decided to buy a Bluetooth 2 ________. I. E. is a kind of 3...
【单选题】Coplete the sentences with the words below. Scientists use 1_______ beams to measure the distance between the Earth and the Moon. Mary has decided to buy a Bluetooth 2 ________. I. E. is a kind of 3...