A pigment called melanin protects the ______ layers of skin from sun rays.A、unde

游客2024-01-02 7

问题 A pigment called melanin protects the ______ layers of skin from sun rays.

选项 A、under
B、below
C、underlying
D、underneath

答案 C

解析此题需辨清词性，本题空白处应填形容词，而选项，A．under作介词或副词；B．below作介词或副词，C. underlying在下面的，下层的，为形容词； D．underneath作介词或副词；因此只有C正确。

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