皮皮学，免费搜题
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搜题
【单选题】
NK细胞的受体包括A.
KAR和KIR
B.
TCR和CR
C.
KAR和BCR
D.
KIR和CR
E.
CDR和KIR
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】We’ll never forget the days ______ we spent in the country.
A.
when
B.
where
C.
what
D.
不填
【单选题】We’ll never forget the days ______ we lived in the country.
A.
when
B.
where
C.
which
D.
不填
【单选题】We’ll never forget the days ______ we lived in the country.
A.
when
B.
where
C.
which
D.
/
【简答题】We'll never forget ________ in New York last year.