题目
题型:不详难度:来源:
—Oh, why not Harvard?
A.anywhere | B.nowhere |
C.everywhere | D.somewhere |
答案
解析
核心考点
试题【—In early autumn Steve applied for admission to college.He wanted to go ________】;主要考察你对数词等知识点的理解。[详细]
举一反三
A.fortunately | B.eventually |
C.deliberately | D.necessarily |
A.sharp | B.shallow | C.narrow | D.awful |
A.concerned | B.fascinated |
C.grateful | D.determined |
To investigate when cockroaches(蟑螂) learn best, researchers at Vanderbill University tested the insects for which odor(peppermint 薄荷 or vanilla 香草) they preferred. Most cockroaches preferred the smell of vanilla to that of peppermint at all times. _小题2:_ Therefore, the scientists trained the cockroaches to prefer the peppermint smell by rewarding the insects with a taste of sugar water when they approached a peppermint smell. _小题3:__
When the cockroaches were trained at night, they remembered the new associations(peppermint=sugar water; vanilla=salt water) for up to 48 hours. However, if the cockroaches were trained in the morning, they quickly forgot which smell went with which water. __小题4:_
So, cockroaches learn better at night than they do in the morning. _小题5:_ Because of this, it is likely that information they gather at night will be more useful to them. These experiments provide some clues about the interactions between body rhythms, learning and memory.
A.When these insects moved toward a vanilla smell, on the other hand, they were punished with a taste of salt. |
B.This result thus shows that the time when they were trained decided the effect of their learning. |
C.They are often more active and tend to search for food during the night. |
D.They were also found to like sugar water, but not salt water. |
F.But they prefer warm conditions found within buildings.
G.Pest species adapt easily to their environment.
最新试题
- 1在一定温度下,可逆反应A(g)+3B(g)2C(g)达到平衡状态的标志是 [ ]A.C的生成速率与C分解的速率
- 2下列物质中属于强电解质的是A.NH3·H2OB.CuC.饱和食盐水D.醋酸铵
- 3计算:|﹣3|﹣﹣=( )
- 4设 NA为阿伏加德罗常数的值,标准状况下某 O2和 N2的混合气体 mg含有 b个分子,则ng该混合气体在相同状况下所占
- 5某电池电动势为1.5V,如果不考虑它内部的电阻,当把它的两极与150Ω的电阻连在一起时,10秒内有多少库仑的电荷定向移动
- 6初中学生吴坤收到一叠宣传暴力凶***的不良读物征订单。你认为吴坤正确的选择是[ ]①订购一些来看看 ②立
- 7国家打击未取得《医疗器械生产企业许可证》和《医疗器械注册证》就生产口罩产品的行为,体现了 [ ]A.市场调节具
- 8在电阻是5Ω的导体中,1.5min通过该导体的电量是45C,那么导体两端的电压是______V.
- 9一天中,中午的温度最高,因此这个时候的蒸腾作用是最强的.______.
- 10下图是一个食物网示意图,请根据图解回答: (1)此食物网中有________条食物链。 (2)其中最短的食物链有____
热门考点
- 1—Don"t forget the door when you leave the room.?—
- 2二战时期的斯大林格勒战役开始的时间是[ ]A.1942年7月B.1943年2月C.1944年6月D.1945年2
- 3城市生态系统中的生产者是指( )A.植物B.人类C.工人D.鸟类
- 4近代史上日本帝国主义对中国发动的两次大规模侵略战争的相似之处有 ①都是日本力图建立世界霸权的重要步骤 ②都是日本为摆脱经
- 5下面一段文字用词、语序、语意等方面有五处不当,请加以改正。(5分)①北京奥运会“八金王”、14枚奥运金牌得主菲尔普斯被曝
- 6书面表达。 假如你就读于一所国际学校,前不久,你们班组织了一次“My learning Experience”的
- 71880年他不顾年老体弱,决心亲率大军首府伊犁。进军途中,他让士兵抬着棺材同行,表明誓死抗击俄国、收复伊犁的决心。他就是
- 8按照新的贫困标准,在联合国去年公布的贫困人口中,又有3亿人加入,全球贫困人口增长21%,超过17亿。贫富差距的拉大[
- 9最小的正整数是( );绝对值最小的有理数是( ).绝对值等于3的数是( ).
- 10中学的业余活动比小学来说更丰富了,多参加这些活动会影响学习。[ ]