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【多选题】
93 关于组织培养与农业的关系正确的是()。
A.
可为遗传工程提供理想的受体材料
B.
可为常规的植物改良程序提供一种新的手段
C.
在远缘杂交中，通过离体授粉或原生质体融合有可能克服受精前障碍
D.
对于无药可治的病毒病，可通过茎尖培养消除病毒
E.
通过离体诱导不定芽或促进腋芽生枝，可对很多重要的园艺植物和名贵花卉、树种进行快速繁殖。
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参考答案：
举一反三
【单选题】已知逻辑函数￡的真值表如表1．4．1所示，则逻辑函数满足( )。
A.
L=ABC
B.
C.
L=A+B+C
D.
L=AB+BC+CA
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【单选题】Either Mary or he going to Paris. Only one person may go there. [     ]
A.
are
B.
is
C.
was
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【简答题】Today only one person in five in the United States lives within 50 miles of his birthplace. Since the country was first settled, Americans have moved around a great deal, and are often far away from t...
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【判断题】The smallest organization is compoesed with only one person.
A.
正确
B.
错误
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【单选题】已知逻辑函数L的波形图如图1．4．1所示，则逻辑函数满足( )。
A.
L=A⊙B
B.
C.
L=A+B
D.
L=AB
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【单选题】She ought to stop _____ she has a headache because she _____ too long. [     ]
A.
to work, was reading
B.
to work, has read
C.
working, has read
D.
working, read
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【判断题】已知逻辑函数AB=AC，则B=C
A.
正确
B.
错误
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【单选题】Only one person _____ the earthquake.
A.
survived
B.
crashed
C.
solid
D.
breathed
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【单选题】Only one person could use the Kinetoscope at a time.
A.
True
B.
False
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【单选题】She can’t _________ a rest，or she won’t get home before 8：00 in the evening．
A.
stop having
B.
stop to have
C.
stops having
D.
stops to have
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相关题目：
【单选题】已知逻辑函数￡的真值表如表1．4．1所示，则逻辑函数满足( )。
A.
L=ABC
B.
C.
L=A+B+C
D.
L=AB+BC+CA
查看完整题目与答案
【单选题】Either Mary or he going to Paris. Only one person may go there. [     ]
A.
are
B.
is
C.
was
查看完整题目与答案
【简答题】Today only one person in five in the United States lives within 50 miles of his birthplace. Since the country was first settled, Americans have moved around a great deal, and are often far away from t...
查看完整题目与答案
【判断题】The smallest organization is compoesed with only one person.
A.
正确
B.
错误
查看完整题目与答案
【单选题】已知逻辑函数L的波形图如图1．4．1所示，则逻辑函数满足( )。
A.
L=A⊙B
B.
C.
L=A+B
D.
L=AB
查看完整题目与答案
【单选题】She ought to stop _____ she has a headache because she _____ too long. [     ]
A.
to work, was reading
B.
to work, has read
C.
working, has read
D.
working, read
查看完整题目与答案
【判断题】已知逻辑函数AB=AC，则B=C
A.
正确
B.
错误
查看完整题目与答案
【单选题】Only one person _____ the earthquake.
A.
survived
B.
crashed
C.
solid
D.
breathed
查看完整题目与答案
【单选题】Only one person could use the Kinetoscope at a time.
A.
True
B.
False
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【单选题】She can’t _________ a rest，or she won’t get home before 8：00 in the evening．
A.
stop having
B.
stop to have
C.
stops having
D.
stops to have
查看完整题目与答案
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