精子与卵子相遇，精子穿过放射冠、透明带、卵黄膜并激活卵子，使雌原核和雄原核融合成新的合子过程称为（） A.受精前的准备 B.妊娠建立 C.妊娠识别 D.受精 E. - 查题网

>> 河南成教 / 兽医外科产科学

河南成教 / 兽医外科产科学

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精子与卵子相遇，精子穿过放射冠、透明带、卵黄膜并激活卵子，使雌原核和雄原核融合成新的合子过程称为（）

A.受精前的准备

B.妊娠建立

C.妊娠识别

D.受精

E.

积分

兽医外科产科学

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题型描述: 阅读理解Have you ever listened to young children talking in the playground? They are always boasting. They say things like, "My Dad's car is bigger than your Dad's, "and "My Mom is smarter than yours." They particularly like to boast about their families.There were three little boys, Harry, Ted and Gavin, who were always boasting. Gavin was the worst. Everything about his family was always the best or the biggest or the most expensive.Whatever the others said, he could always go on better. One day when they were walking to school, Harry said, "My father had a bath twice a week," Ted spoke next. " That's nothing," he said. "Having a bath twice a week is dirty. My father has a bath every day twice a day." Ted looked at Gavin. Now it was his turn. But what could he say? " This time, " Ted thought, " I'm going to win." Gavin didn't know what to say. He couldn't say that his father had a bath three times a day. That was silly. He walked on in silence. Ted smiled at Harry，and Harry smiled back. They were sure that for once they had beaten Gavin. They reached the school gates. Still Gavin said nothing. They went into class. Morning break，lunch time and afternoon break all passed. Still Gavin said nothing. "We've won, " Ted said to Harry, but he spoke too soon. On the way home, Gavin said, "My Dad is so clean that he doesn't have to bathe at all."1、 "He spoke too soon" in the last paragraph means he was wrong. A. TRUE B. FALSE 2、 Ted's father often had a bath twice a day. A. FALSE B. TRUE 3、 Gavin boasted the most. A. FALSE B. TRUE 4、 Harry boasted about the number of times his father had a bath every week. A. TRUE B. FALSE 5、 According to the passage，the meaning of the word "boast" is " to talk big ". A. FALSE B. TRUE统考英语B

在SolidWorks中，按Ctrl + 5组合键绘图区显示A、前视B、上视C、左视D、右视机械工程制图及Solidworks应用

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A.A B.B C.C D.D计算机文化基础

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