(2020·全国卷Ⅰ)China has become the first country to land a spacecraft on the far side of the moon.The unmanned Chang'e4 probe (探测器) — the name was inspired by an ancient Chinese moon goddess — 61 (touch) down last week in the South PoleAitken 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'e4 66 (find) and study areas of the South PoleAitken basin.“This really excites scientists，” Carle Pieters, a scientist at Brown University, says, “because it 67 (mean) we have the chance to obtain information about how the moon 68 (construct)．” Data about the moon's composition, such as how 69 ice and other treasures it contains, could help China decide whether 70 (it) plans for a future lunar (月球的) base are practical.
第一步：速览语篇，定主要时态。
根据文中出现的时间状语、动词的时态可知本文时态以现在时为主。
第二步：细读句子，定空格处答案。
细读句子的同时，根据语法填空题的解题思维流程，结合所掌握的语法和文化知识，利用自己的思维能力确定空格处的正确答案。
61．touched 有提示词类型。考查时态。分析句子结构，“the name was inspired by an ancient Chinese moon goddess”部分是对探月器名称的解释，可以看作是插入成分。故可判断出空格处是谓语动词。再根据句中的时间状语last week可知，此处用一般过去时态。 touch down “降落，着陆”。
62．extremely 有提示词类型。考查副词。 修饰形容词challenging要用副词。故填extremely。
63．where 无提示词类型。考查定语从句。分析句子可知，空处引导一个定语从句，先行词是a spot，关系词替代先行词在从句中作地点状语，应用where引导。故填where。
64．interest 有提示词类型。 考查名词。句中含有“be＋of＋名词”结构， be of particular interest＝be particularly interesting。故填interest。
65．than 无提示词类型。考查连词。根据前面的more可知，此处考查连词than。 more ...than ...“比……多”。
66．to find 有提示词类型。 考查动词不定式。分析句子结构可知，此空处是非谓语动词；结合句意可知，此处用不定式表示目的。
67．means 有提示词类型。 考查时态。根据句子结构可知，此空处是谓语动词。本句引用了Carle Pieters的话，结合上下文时态可知，空格处要用一般现在时态。
68．is constructed 有提示词类型。考查时态、语态和主谓一致。分析句子可知，此处是宾语从句的谓语动词，construct与主语the moon之间是被动关系，应使用被动语态，再由上下文可知，此处应使用一般现在时，主语the moon是单数，故填is constructed。
69．much 无提示词类型。 考查形容词。ice是不可数名词，故表达询问“多少冰” 时用how much ice。
70．its 有提示词类型。考查代词。空格处作plans的定语，故需填形容词性物主代词its。
