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【单选题】
若直线l是平面α的斜线,则在平面α内A.
与l垂直的直线只有一条
B.
不存在与l平行的直线
C.
不存在与l垂直的直线
D.
与l平行的直线有无数条
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反馈参考答案：
举一反三
【单选题】Why did Kublai Khan fail each time when he sent a fleet to invade Japan?
A.
Because Japan was too distant from China.
B.
Because Kublai Khan was not be adequately prepared for the war.
C.
Because the soldiers didn't want to go to Japan.
D.
Because the troops of Kublai Khan met the typhoon.
【单选题】When did a Newtown Gas employee last read Saurabh Khan's meter?
A.
In February
B.
In March
C.
In April
D.
In May
【单选题】When did Salman Khan start devoting all his time to Khan Academy?
A.
In 2005.
B.
In 2009.
C.
In 2015.
【简答题】When did Khan el-Khalili begin to do business?
【简答题】What medicine is used by the doctors in Khan el-Khalili?
【单选题】Genghis Khan() Genghis Khan, the great Mongol conqueror, was horn in about 1162. His father, a petty (小的) Mongol chieftain(头人) named the boy Temujin(铁木真), after a defeated rival chieftain, and fo...
B.
by a defeated rival chieftain.
C.
by the great Mongol conqueror.
D.
by his father.
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