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【单选题】

We always wonder about famous people. What were they like
Sigmund Freud, the world-famous doctor of Vienna, was a thinker who changed the way we look at mental trouble. He was also a man of courage.
Once Freud was walking down a dark street, he was met by two robbers who wanted to rob him. This was back in 1890. Freud took his stick by the tip and beat off the robbers.
Freud did not lose cool when the Nazis (分子) came to his house. The Nazi soldiers found 1500 shillings in a drawer. Their officer put the money in his pocket and was about to leave.
"You’re very lucky." said Dr. Freud.
"Why" asked the young officer.
"Well," said Freud. "I’ve been a doctor here in Vienna for forty years, and I never got 1500 shillings for just one visit."
Freud was not only a brave man, but also had a sense of humour. Once, at his 70th birthday party, a friend asked Freud if he could put his work into words. "Well," said Freud, "We take the patient out of his mental trouble, and return him to the common misery.\
The fact that Freud beat off the robbers with his stick shows that ______.

A.
Freud was brave
B.
streets were unsafe in 1890’s
C.
Freud liked taking a walk at night
D.
lighting was poor in the streets of Vienna in 1890’s
题目标签:分子
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【单选题】要对一双链的DNA分子进行3’端标记可用( )。

A.
Klenow酶
B.
DNA聚合酶Ⅰ
C.
T4 DNA聚合酶
D.
T7 DNA聚合酶

【多选题】按照刑法的相关规定,下列哪些犯罪分子不得假释()

A.
因抢劫罪被判处有期徒刑15年的甲
B.
因贪污罪、受贿罪被判处18年有期徒刑的乙
C.
因贩卖海洛因被判处无期徒刑的丙
D.
因构成累犯被从重处罚判处有期徒刑7年的丁