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【單選題】
DNA復(fù)制時，細胞中不可能發(fā)生的情況是 （ ）
A.
出現(xiàn)姐妹染色單體
B.
染色體數(shù)目加倍
C.
染色體數(shù)目不變
D.
DNA數(shù)目加倍
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舉報參考答案：
舉一反三
【單選題】Why was the woman so late?
A.
Something went wrong with the bus.
B.
She took somebody to hospital.
C.
She didn’t catch the bus.
【單選題】Who is Frank Stone?
A.
A friend of the woman’s.
B.
A visitor to the clinic.
C.
A patient of Dr. Milton’s.
【單選題】What do the two speakers think of Tom?
A.
He gets nervous very easily.
B.
He is not an experienced speaker.
C.
He hasn’t prepared his speech well.
【單選題】Why won’t Mr Stone come to the clinic tomorrow?
A.
The clinic will be closed.
B.
Dr. Milton won’t come to work.
C.
He can’t spare the time.
【單選題】The machines require _______ , so the workers are required _______ ready .
A.
repairing/to get
B.
repaired/to get
C.
repairing/getting
D.
to be repaired/getting
相關(guān)題目：
【單選題】Why was the woman so late?
A.
Something went wrong with the bus.
B.
She took somebody to hospital.
C.
She didn’t catch the bus.
【單選題】Who is Frank Stone?
A.
A friend of the woman’s.
B.
A visitor to the clinic.
C.
A patient of Dr. Milton’s.
【單選題】What do the two speakers think of Tom?
A.
He gets nervous very easily.
B.
He is not an experienced speaker.
C.
He hasn’t prepared his speech well.
【單選題】Why won’t Mr Stone come to the clinic tomorrow?
A.
The clinic will be closed.
B.
Dr. Milton won’t come to work.
C.
He can’t spare the time.
【單選題】The machines require _______ , so the workers are required _______ ready .
A.
repairing/to get
B.
repaired/to get
C.
repairing/getting
D.
to be repaired/getting
參考解析：
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