【单选题】It is about time that we ______ closer to the speaker so that we could hear him clearer.
【简答题】世界上第一只克隆绵羊“多利”的培育程序如下图所示。请看图后回答: (1)写出图中 a 、b 所指的细胞工程名称:a__________,b_________。 (2)“多利”面部的毛色是_______,请根据遗传学原理说明判断的原因是:__________。 (3)继植物组织培养之后,克隆绵羊的育成功,证明动物细胞也具有________________。
【简答题】世界上第一只克隆绵羊"多利"的培育过程如下图所示,图中A为黑面绵羊,B为白面绵羊。 请举例说明克隆绵羊培育成功的实际意义。
【单选题】It is about time that we ____ to supper, for we still have a meeting to attend this evening.
【单选题】We are all for your suggestion that the trip ______________
【单选题】在纯电容电路中,已知流过电容的电流为正弦交流,则该电流与电容端电压的相位差为( )。
【多选题】智慧旅游的“智慧”表现在( )三个方面。
【单选题】—Shall I go and buy some food for dinner? —No, I have stored a lot in the fridge. That ______ be enough. [ ]
【单选题】The suggestion that the meeting _________requires _________.
A.
puts off; being considered
B.
be put off; to be considered
C.
should be put off; considered
D.
is put off; being considered
【简答题】世界上第一只克隆绵羊“多利”的培育程序如图所示,请据图回答: (1)写出图中a、b所指的细胞工程名称:a_______;b_______。 (2)实验细胞工程④时,所需的受体细胞大多采用动物卵细胞的原因是_______。 (3)“多利”面部的毛色是______,请根据遗传学原理说明判断根据:_________。 (4)继植物组织培养之后,克隆绵羊的培育成功,证明动物细胞细胞核也具有______。 ...