试题题干
Summarization
Directions: The paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Spell out the missing letters of the word.
A study recently published suggests there is ice on the moon. If there's enough of it, researchers believe it could be a water source for a future moon mission. Scientists involved in the study are hoping another mission will be carried out to examine the remote parts of the moon and better map it out.
It m
if there is enough ice on the moon.
参考答案
试题解析
本段主旨：月球上是否有足够的冰很重要。
matter：很重要、要紧。此处matter为不及物动词，主语是it且句子时态为一般现在时，故需使用第三人称单数形式matters。