题目
Experts say that the unnecessary ingredients can be filtered ____ when water is sinking slowly down through the soft ground.
Experts say that the unnecessary ingredients can be filtered ____ when water is sinking slowly down through the soft ground.
题目解答
答案
filter out"滤出",是固定搭配。
故填:out。
故填:out。
解析
本题考查固定短语的搭配。句子中需要填入的动词短语是"filter"的搭配,而"filter out"是固定搭配,意为"滤出;过滤掉"。解题关键在于根据语境判断短语的完整性,并结合句意选择正确的介词。
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短语结构分析
"Filter"作为动词时,常用搭配为"filter out",表示"过滤掉"。例如:
The machine filters out impurities from the water.(机器过滤掉水中的杂质。) -
语境匹配
题目中描述"unnecessary ingredients(不必要的成分)"被过滤,符合"filter out"中"排除、去除"的含义。句中"when water is sinking slowly down through the soft ground"的场景也暗示了过滤过程。