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【单选题】
听力原文：W: Hey, why's your foot bandaged up? What happened? M: I was going to be late for work this morning, so I had to hurry. I was trying to get down the stairs quickly and I slipped and twisted my ankle. W: Ouch! M: Yeak. The reach I didn't wake up on time was because the batteries in my alarm clock ran out last night. Why did the man wake up late this morning?A.
Because he twisted his ankle the night before.
B.
Because the battery in his alarm clock had run out of electricity.
C.
Because his mother forgot to wake him up.
D.
Because he didn't hear the alarm clock.
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】NKT细胞主要识别
A.
病毒感染细胞，某些肿瘤细胞表面的糖类配体
B.
CD1分子提呈的脂类和糖脂类抗原
C.
表达于自身组织细胞表面的MHC-Ⅰ类分子
D.
受感染细胞表面的热休克蛋白
E.
C3b包被的病原体等抗原性异物
【单选题】NKT细胞TCR主要识别:
A.
抗原肽-MHCI类分子复合物
B.
抗原肽-MHCII类分子复合物
C.
CD1提呈的磷脂和糖脂类抗原
D.
颗粒性抗原
E.
可溶性抗原
【单选题】关于NKT细胞，下列哪一项错误
A.
表面表达TCR-CD3复合物
B.
主要分布于肝、骨髓和胸腺
C.
可识别CDl分子呈递的脂类抗原
D.
特异性杀伤靶细胞
E.
可分泌IL-4等细胞因子参与免疫调节
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