问题
名词解释
离基三出脉
答案
参考答案：
在网状脉中有一种情况是在主脉基部两侧只产生一对侧脉，这一对侧脉明显比其他侧脉发达，称为三出脉。当三出脉中的一对侧脉不是从叶片基部生出，而是离开基部一段距离才生出时，则特称为离基三出脉。
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离基三出脉
参考答案：
在网状脉中有一种情况是在主脉基部两侧只产生一对侧脉，这一对侧脉明显比其他侧脉发达，称为三出脉。当三出脉中的一对侧脉不是从叶片基部生出，而是离开基部一段距离才生出时，则特称为离基三出脉。
Have you ever seen the man in the moon? If you look closely at the moon on some nights, you can see the face of the man in the moon. Some people say that they can see an old man carrying sticks.小题1: These pictures are made by the mountains and plains of the moon. Long ago people in England used to tell their children that the moon was made of green cheese.小题2: The moon is a large round rock. It is completely bare. There are no trees or plants on the moon. There are no rivers or seas. There are no living things. It never rains on the moon, and everything is covered with dirty, white dust. 小题3: When the sun shines on it, the moon is very hot, in the shade, however, it is as cold as ice.小题4: It does not weigh as much as the earth. If you went to the moon, you would weigh six times less than you do now. 小题5: 仔细阅读短文，将下面五句话还原到文中空白处，并将其标号填入答题栏的相应位置。
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