热点试题

[ 化学 ] 有反应2FeS04=Fe203+S02↑+S03↑,将生成的混合气体通入BaCl2溶液中生

有反应2FeS04=Fe203+S02↑+S03↑,将生成的混合气体通入BaCl2溶液中生成的沉淀是
A.Ba(HS03)2B.BaS03C.BaS04D.BaS03和BaS04

2016-05-16 | 0

[ 生物 ] 生物的遗传物质主要是一种叫做脱氧核糖核酸的化学物质,它的英文名为________,主要存在

生物的遗传物质主要是一种叫做脱氧核糖核酸的化学物质,它的英文名为________,主要存在于细胞核中的染色体上。

2016-05-17 | 0

[ 数学 ] 如果x是自然数,且2<x<7,那么x=______.

如果x是自然数,且
2
<x<
7
,那么x=______.

2016-05-17 | 0

[ 数学 ] (本小题满分14分)已知函数=(1) 若存在单调增区间,求的取值范围;(2)是否存在实数>

(本小题满分14分)已知函数=
(1) 若存在单调增区间,求的取值范围;
(2)是否存在实数>0,使得方程在区间内有且只有两个不相等的实数根?若存在,求出的取值范围?若不存在,请说明理由.

2016-05-22 | 0

[ 数学 ] 一质点受到平面上的三个力(单位:牛顿)的作用而处于平衡状态.已知,成角,且,的大小分别为2

一质点受到平面上的三个力(单位:牛顿)的作用而处于平衡状态.已知角,且的大小分别为2和4,则的大小为       

2016-05-25 | 0

[ 数学 ] 对于,请依据:;;;归纳出为正整数)满足的不等式,并予以证明;

对于,请依据:
;归纳出为正整数)满足的不等式,并予以证明;

2016-05-26 | 0

[ 语文 ]         心动于心仪的物件,心动于赏心悦目的笑容,或心动于一次愉悦的交流……可是,在

        心动于心仪的物件,心动于赏心悦目的笑容,或心动于一次愉悦的交流……可是,在你偶尔思绪飘飞时,在你偶尔驻足沉思时,你是否记得最近一次家人带给你的心动?这个时刻可能就在昨晚父母给你的电话里,也可能就在上周你与父母的生气后,或者这个时刻已离现在有些时日了。
       捕捉你自己的身边之事,以“心动”为话题写一篇有关亲情的文章。
       要求:①自拟题目;
                 ②写出自己的真实体验和感悟;
                 ③除诗歌外文体不限;
                 ④不少于500字。

2016-05-27 | 0

[ 英语 ] Once there lived a farmer called Henry. He ha

Once there lived a farmer called Henry. He had a brother, Mike, in town who was an excellent gardener.  His skilland his beautiful trees were      everywhere.
One day, Henry went to town to visit Mike. "Look, my brother," said Mike, "Here is the best       tree from mygarden. Take it home and      it so that you, and your children, and your children's children can enjoy it.” Henry was      with the apple tree and went back home. The next morning, he began to      where he should plant it.
"If I plant it on the hill,” said he to himself, "the wind might catch it and      flown the fruit; If I plant it closeto the road, people who pass by will pick some of them; But if I plant it ..."
    he planted the tree in the comer behind his house, where no one else could notice it. But the tree bore(结出)no fruit the first year, nor the second. Then Henry sent for his brother and said to him       , “You have cheatedme. This is the third year and it bring me       but leaves.
When Mike saw where the tree was planted, he laughed and said, "You have planted the tree in such a cold cornerwithout        or warmth. How, then, could you expect flowers and fruil?"
小题1:
A.simpleB. famousC. similarD. common
小题2:
A.pearB.grapeC. appleD. banana
小题3:
A.sellB. washC. hideD. plant
小题4:
A.tiredB. patientC. pleasedD. popular
小题5:
A.learnB. wonderC. realizeD. understand
小题6:
A.putB. cutC. pushD. shake
小题7:
A.FinallyB. FirstlyC. LuckilyD. Certainly
小题8:
A.happilyB. angrilyC. kindlyD. carelessly.
小题9:
A.nothingB. somethingC. everythingD. anything
小题10:
A.airB. earthC. waterD. sunlight

2016-05-27 | 0

[ 英语 ] 将下列单词归类。 chicken    apple    car    cow    pi

将下列单词归类。
chicken    apple    car    cow    pig    bus   truck
pear (梨)  duck   cab    farm    field    orange   pond
1. 动物: ______________________________________________________
2. 水果: ______________________________________________________
3. 交通工具: __________________________________________________
4. 其他: ______________________________________________________

2016-05-28 | 0

[ 英语 ] The speech by the headmaster given on my grad

The speech by the headmaster given on my graduation ceremony is strongly impressed ___ my memory.
A.toB.overC.byD.on

2016-05-28 | 0