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(3). (单选题) What does the underlined word “This” in paragraph 3 refer to?(本题0.0分)
A、 A satellite.
B、 A little rocket.
C、 A satellite seems to stay in the same place in the sky.
D、 The satellite puts the rockets in the right position.
A、 A satellite.
B、 A little rocket.
C、 A satellite seems to stay in the same place in the sky.
D、 The satellite puts the rockets in the right position.
参考答案