单选题 China launched the Chang'e 1 and Chang'e 2 orbiters in 2007 and 2010, ___, and pulled off a near-side landing with the Chang'e 3 mission in December 2013.

单选题 Chang'e 4 will therefore be able to ___ its surroundings in great detail, probing the composition of the surface and the structure of the ground beneath the lander's feet.

单选题 The US New Horizons probe ___ past the distant object Ultima Thule just after midnight on Jan. 1

单选题 We all are anticipating the Olympic Games to be held in Beijing, and the more exciting is the Olympic Torch will be ___ in our city.

单选题 The symbolic pull of the mission will ___ more with the masses: The list of unexplored locales in our solar system just got a little shorter.

单选题 The far side is a much tougher target for surface exploration, because the moon's rocky bulk would ___ direct communication with any landers or rovers there.

单选题 The rebel forces ___ a surprisingly successful attack against the better equipped government troops.

单选题 It takes the moon about the same amount of time to ___ once on its axis as it does for the natural satellite to orbit the Earth.

单选题 Chang'e 4 ___ eight science instruments: four apiece on a stationary lander and a mobile rover.