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【单选题】
有关刺激与反应的下述各点,正确的是
A.
同样的刺激作用于同类组织,其反应必然相同
B.
引起组织反应的刺激称为國刺激
C.
引起组织反应的环境条件变化都可称为刺激
D.
反应是指神经系统参与下的一系列活动
E.
只要是刺激均能引起反应
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【单选题】毛状根诱导不能采用的方法是什么?
A.
通气搅拌法
B.
外植体接种法
C.
茎秆接种法
D.
原生质体 - 农杆菌共培养法
【单选题】听力原文:W: You know, the Smiths have invested all their money in stocks. M: They may think that's a wise move but that's the last thing I would do. Q: What's the man's opinion about the Smiths' investmen...
A.
He feels the Smiths have done a clever thing.
B.
He thinks that it is unwise to invest all their money in stocks.
C.
He thinks the Smiths should buy stocks later.
D.
He thinks that the Smiths should move.
【简答题】据报道,某超市在中秋节后推出月饼盒换鸡蛋的活动。请你就此事用英语写一篇短文,向校英文报的Environment 专栏投稿。 内容主要包括:1. 商品包装带来环境问题; 2. 此项活动带来的好处; 3. 你对回收利用的看法。 注意:1. 词数120左右;   2. 可以适当增加细节;  3. 开头已给出,但不计入总词数。 It is reported that a supermarket has o...
【多选题】以下关于折半查找的说法,正确的是( )。
A.
折半查找只适用于顺序表
B.
在某个有序顺序表上查找任意指定关键字的元素时,采用折半查找一定比顺序查找所需的关键字比较次数少
C.
折半查找不适用于元素频繁变化的顺序表
D.
折半查找的平均时间复杂度低于顺序查找
E.
折半查找的判定树一定为一棵完全二叉树
【单选题】The Smiths have gone to New York for their holiday, with an old servant ____ their house.
A.
looking after
B.
look after
C.
having looked after
D.
looked after
【单选题】罗马帝国在尼禄皇帝的指使下,开始了公开的第一次迫害基督徒的活动的时间是()
A.
公元前46年
B.
公元46年
C.
公元64年
D.
公元前64年
【单选题】()的指使下,罗马帝国开始了公开的第一次迫害基督徒的活动。
A.
图密善黄帝
B.
塞维鲁黄帝
C.
尼禄黄帝
D.
戴克里先黄帝
【单选题】Even though the Smiths have moved to a faraway place, we still see them ___.
A.
from time to time
B.
at a time
C.
at the same time
D.
all the time
【单选题】The Smiths have three daughters, one a baby, and ________ twins of twelve.
A.
another
B.
the other
C.
others
D.
the others
【单选题】听力原文:W: You know, the Smiths have invested all their money in stocks. M: They may think that's a wise move but that's the last thing I'd do. What is the man's opinion about the Smiths' investment?
A.
He feels they have done a wise thing.
B.
He doesn't think they should move.
C.
He thinks it is better to invest later.
D.
He thinks it is unwise to buy stocks.
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