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【单选题】
听力原文：W: I'm going to the movies tonight with a friend of mine. Would you like to come with us? We can have supper together first. M: Thanks for inviting me, Lily. But I think I'll pass. Anna needs this paper finished by tomorrow morning. Maybe next time. Q: What will the man do tonight? (15)A.
Go to an appointment with Anna.
B.
Go on with his paper until it is finished.
C.
Have supper with the woman and her friends.
D.
Go to the movies with the woman and her friends.
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皮皮学刷刷变学霸
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【单选题】下列对麦克尔孙实验说法错误的是:()
A.
光顺着地球公转方向传播l0的时间为l0/c+v
B.
光逆着地球公转方向返回的时间为l0/c-v
C.
光垂直方向往返的时间为2v/c2-v2
D.
这个试验并没有测出以太的漂移速度
【简答题】用95%乙醇作为固定剂的抗原是A.蛋白质 B.细菌 C.激素 D.酶 E.类脂质 10%多聚甲醛作为固定剂的抗原是A.蛋白质 B.细菌 C.激素 D.酶 E.类脂质 用丙酮作固定剂的抗原是A.蛋白质 B.细菌 C.激素 D.酶 E.类脂质
【简答题】用95%乙醇作为固定剂的抗原是A.蛋白质 B.细菌 C.激素 D.酶 E.类脂质 用10%多聚甲醛作为固定剂的抗原是A.蛋白质 B.细菌 C.激素 D.酶 E.类脂质 用丙酮作为固定剂的抗原是A.蛋白质 B.细菌 C.激素 D.酶 E.类脂质
【简答题】什么是基因工程?基因工程的操作步骤有哪些?
【单选题】Who opposed the bill that was introduced in the House of Commons in the early 1900s
A.
Sir Robert Pearce
B.
farmers
C.
television and radio broadcasting companies
D.
the U.S. Congress
【简答题】The early 1900s were very different from today, when toys were still the delight of children everywhere. Theodore Roosevelt's Presidency marks the beginning of the “Teddy Bear”. In the year 1902，toy b...
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