1.(2020课标全国Ⅰ)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 it could send signals to the spacecraft and to Earth.
答案 where 考查定语从句。设空处引导的是定语从句,修饰先行词a spot。把先行词还原到从句后为:It could send signals to the spacecraft and to Earth in the spot.由此可知关系词在从句中作地点状语,所以要用关系副词where引导。
2.(2020课标全国Ⅰ)Data about the moon's composition, such as how ice and other treasures it contains, could help China decide whether (it) plans for a future lunar (月球的) base are practical.
答案 much;its 第一个逗号前是句子的主语部分,中心词是Data。第二个逗号后的could help是句子的谓语动词,whether引导的是宾语从句。ice作“冰”讲时是不可数名词,应该用much修饰。第二个空表达:它的(中国的)计划,应该用形容词性物主代词its修饰。
