填空题
(1) He doesn't care much for music.________ (2)The children are well cared for in the nurseries.__
拟南芥P基因的突变体表现为花发育异常。用生长素极性运输抑制剂处理正常拟南芥,也会造成相似的现象。下列推测错误的是
[ ]
A.生长素与花的发育有关B.生长素极性运输与花的发育有关C.P基因可能与生长素极性运输有关D.生长素极性运输抑制剂诱发了P基因突变
重点短语
1.从那以后_____
2.关心,忧虑___
3.改变主意____
4.照常_____
5.下决心,决定____
6.喜爱,喜欢____
7.在午夜_____
8.屈服,让步___
9.穿着_____
10.举起,张贴_____
如下图所示,图甲表示胚芽鞘受到单侧光的照射,图乙表示不同浓度生长素溶液对胚芽鞘生长的影响,如果图甲中b处的生长素浓度为m,设a处的生长素浓度为x,则
[ ]
A.m>x>iB.0
向日葵和番茄都能产生果实和种子,向日葵的果实就是平时我们吃的“瓜子”。在上述两种植物开花期间,遇到了连续的阴雨天,影响了植物的授粉。管理人员及时喷洒了一定浓度的生长素。下列叙述正确的是
[ ]
A.两种植物都能形成无子果实,产量均未受影响B.番茄形成无子果实,产量未受影响;向日葵形成无子果实,产量下降C.两种植物都能形成无子果实,产量下降D.番茄形成有子果实,产量上升;向日葵不能形成无子果实
___\_(1)The apples give off a very sweet smell.______
(2)Our food supply gives out at last. ___
(3) He gave up teaching only two years ago.____
(4) The old teacher gave away all his books to the school.____
(5)Please give me back the book I lent you.___
(6)I'11 never give in to difficulty.____
(7)Somebody gave away the secret. ____