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【判断题】
双休日和法定节假日,图书馆的电子资源 24 小时免费开放。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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【单选题】以下有关IL-2的说法，正确的是
A.
IL-2主要由T细胞产生
B.
IL-2主要由B细胞产生
C.
IL-2主要刺激B细胞生长
D.
IL-2分子量为20kD，含155个氨基酸
E.
IL-2无种族特异性
【单选题】I enjoy the popular dance 'hip-hop', but ________of my parents likes it.
A.
either
B.
both
C.
none
D.
neither
【简答题】There are three people in my family, my parents and I. My name is Liu Ming. I’m a middle school 1 . I am thir years old. I’m 2 China, so I can speak 3 . I can speak a little English, too. My fathe...
【单选题】以下有关IL-2的说法，正确的是
A.
IL-2主要由T细胞产生
B.
IL-2主要由B细胞产生
C.
IL-2主要刺激8细胞生长
D.
IL-2分子量为20kD，含155个氨基酸
E.
IL-2无种族特异性
【简答题】Hello, my name is Bill Black. There are six people in my family. They are my grandparents, my parents, my brother and me. So we have a big house with four bedrooms. My brother and I share a room. I ha...
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