问题: 一道选择题
At least,this is what psychologists tell us,
and they ___ know because they have been
studying the meaning of color preference.
A)would B)could C)should D)must
为什么选C
解答:
At least,this is what psychologists tell us,
and they ___ know because they have been
studying the meaning of color preference.
因为整个句子的意思是：
至少，这是心理学家们告诉我们的，因为他们在研究对颜色的喜好的含义，所以他们应该知道。
根据意思，选择“should”——应该
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