1.(2020新高考Ⅰ,39)The 80,000 objects collected by Sir Hans Sloane, for example, formed the core collection of the British Museum opened in 1759.
答案 which/that
2.(2020课标全国Ⅰ,63)Because the moons body blocks direct radio communication with a probe, China first had to put a satellite in orbit above the moon in a spot it could send signals to the spacecraft and to Earth.
答案 where
3.(2020课标全国Ⅲ,61)In ancient China lived an artist paintings were almost lifelike.
答案 whose
4.(2020江苏,21)Many lessons are now available online, from students can choose for free.
答案 which
