The unmanned Chang'e-4 probe (探测器) — the name was inspired by an ancient Chinese moon goddess — 　　1　　 (touch) down last week in the South Pole-Aitken basin. Landing on the moon's far side is 　　2　　 (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 　　3　　 it could send signals to the spacecraft and to Earth. The far side of the moon is of particular 　　4　　 (interesting) to scientists because it has a lot of deep craters (环形山), more so 　　5　　 the familiar near side. Chinese researchers hope to use the instruments onboard Chang'e-4 　　6　　 (find) and study areas of the South Pole-Aitken basin. "This really excites scientists," Carle Pieters, a scientist at Brown University, says, "because it 　　7　　 (mean) we have the chance to obtain information about how the moon 　　8　　 (construct)." Data about the moon's composition, such as how 　　9　　 ice and other treasures it contains, could help China decide whether 　　10　　 (it) plans for a future lunar (月球的) base are practical. (1) (2) (3) (4) (5) (6) (7) (8) (9) (10)

　　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 — 　　1　　 (touch) down last week in the South Pole-Aitken basin. Landing on the moon's far side is 　　2　　 (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 　　3　　 it could send signals to the spacecraft and to Earth. The far side of the moon is of particular 　　4　　 (interesting) to scientists because it has a lot of deep craters (环形山), more so 　　5　　 the familiar near side. Chinese researchers hope to use the instruments onboard Chang'e-4 　　6　　 (find) and study areas of the South Pole-Aitken basin. "This really excites scientists," Carle Pieters, a scientist at Brown University, says, "because it 　　7　　 (mean) we have the chance to obtain information about how the moon 　　8　　 (construct)." Data about the moon's composition, such as how 　　9　　 ice and other treasures it contains, could help China decide whether 　　10　　 (it) plans for a future lunar (月球的) base are practical.

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