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【单选题】
外植体选取的最佳部位是?A.
花梗
B.
花丝
C.
叶片
D.
茎段
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反馈参考答案：
举一反三
【单选题】The word 'foremost' in the first paragraph probably ______.
A.
firstly
B.
largely
C.
for the most part
D.
most importantly
【简答题】the little prince visits the tippler The next planet was inhabited by a tippler. This was a very short visit, but it plunged the little prince into deep dejection. "What are you doing there?" he said ...
【单选题】听力原文： As I am sure you are aware, history is full of people who were so admired that over the centuries they become almost mythical figures. George Washington is a good example. Everyone knows this st...
A.
To demonstrate George Washington's survival skills.
B.
To show that some stories about famous people may be historically inaccurate.
C.
To describe a historical that was portrayed in a painting.
D.
To tell a story that George Washington told about himself.
【单选题】CRH2C型动车组当出现污物槽（）时，应对相应厕所、洗手间手动锁闭，停止使用。
A.
0%故障和100%故障
B.
0%故障和80%故障
C.
80%故障和100%故障
D.
90%故障和100%故障
【简答题】当出现污物槽100%故障时，应该对相应厕所、洗手间（）。
【简答题】《服务贸易总协定》中作出了哪些具体化的自由化承诺?
【简答题】《服务贸易总协定》中作出了哪些具体化的自由化承诺?
【单选题】当出现污物槽（）故障时，应该对相应厕所、洗手间手动锁闭，停止使用。
A.
0%故障和100%故障
B.
0%故障和80%故障
C.
80%故障和100%故障
D.
90%故障和100%故障
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