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【判断题】
酶联免疫法检测四环素时,酶标记物将底物转化为有色产物,有色产物的吸光度值与试样中四环素浓度成反比。A.
正确
B.
错误
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举一反三
【单选题】I borrowed two books. ( ) is in English, and( ) is in Chinese.
A.
It; another
B.
One; another
C.
The one; another
D.
One; the other
【简答题】小题1:Why is June 6, 1990 a special day for Mommy? A．Her dream of being a mother came true. B．She found her origin from her Chinese mother. C．She wrote the letter to her daughter. D．Her female line was ...
【简答题】用assign描述的语句我们一般称之为（）逻辑，并且它们是属于并行语句，即于语句的书写次序无关。而用always描述的语句我们一般称之为组合逻辑或（）逻辑，并且它们是属于串行语句，即于语句的书写有关。
【单选题】I borrowed two books. One is in English, and _______ is in Chinese.
A.
another
B.
other
C.
the other
【单选题】—I borrowed two books from the library yesterday. —Be careful. If you lost it you must _____ it. [ ]
A.
pay
B.
pay for
C.
cost
D.
spent
【单选题】Which of the following is NOT true?
A.
a. Eleanor and Corinne are sisters.
B.
b. Nanny and Barbara are grandmother and granddaughter.
C.
c. Barbara and Corinne are mother and daughter.
D.
d. Nanny and Corinne are grandmother and granddaughter.
【单选题】Which of the following is NOT true?
A.
． Obama’s father was born in Kenya.
B.
． Obama has a son and a daughter.
C.
． Obama once worked in Africa.
D.
． Obama got good education in Harvard University.
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