内容正文:
动词的分类
动词的形式
动词短语
动词及动词时态
Lesson 4
动词时态
4
1
China has become the first country to land a spacecraft on the far side of the moon. The unmanned Chang’e-4 probe (探测器) — the name was inspired by an ancient Chinese moon goddess — 61 (touch) down last week in the South Pole-Aitken basin. Landing on the moon’s far side is 62 (extreme) challenging. Because the moon’s body blocks direct radio communication with a probe, China first had to put a satellite in orbit above the moon in a spot 63 it could send signals to the spacecraft and to Earth. The far side of the moon is of particular 64 (interesting) to scientists because it has a lot of deep craters (环形山), more so 65 the familiar near side. Chinese researchers hope to use the instruments onboard Chang’e-4 66 (find) and study areas of the South Pole-Aitken basin. "This really excites scientists," Carle Pieters, a scientist at Brown University, says, "because it 67 (mean) we have the chance to obtain information abo