下列各句没有语病的一项是:()( 2分 ) A.人类历史发展的过程,就是各种文明

题型:选择题

问题:

下列各句没有语病的一项是:(     )( 2分 )

A.人类历史发展的过程,就是各种文明不断融合、创新、交流的过程。

B.刚刚发生的美国波士顿炸弹袭击事件再一次警醒人们,反恐一定要下苦功夫不可。

C.禽流感病毒正威胁着人们的生命,我们能否战胜它,关键得看我们每一个人应对的态度。

D.在网络的轮番炒作下,使“正能量”这个词迅速走红,一时成为了2012年的网络热词。

考点:病句辨析
题型:选择题

用适当的方法解方程:

(1)4x2-9=0;

(2)x(x-1)=2(x-1);

(3)x2-4x+3=0.

题型:选择题

读“地球公转图”,完成下列要求.

(1)当地球公转到A处时,太阳直射的重要地理界线是______,这一天是北半球的______日(节气),你学校所在地昼夜长短的情况是______.

(2)我国航天员杨利伟在2003年10月15日乘坐载人宇宙飞船首飞成功,当时地球在绕太阳公转轨道中的大体位置位于上图中的______.

①A、B之间②B、C之间③C、D之间④A、D之间

(3)是真是假:

一位宇航员骄傲地对他爸爸说:“爸爸,我已经绕地球转了20圈了.”他爸爸笑着回答:“我比你更了不起,我已经绕比地球更大的太阳转了60圈了,还准备再转二三十圈呢!”

①你认为宇航员的爸爸说的话是真的吗?为什么?______;

②你知道宇航员的爸爸的年龄吗?理由是什么?______.

题型:选择题



As always, I am pleased to be here at the National Press Club for my (1) Speech. This is the seventh time I have had the (2) to give this speech, and over the years I have talked about a wide range of issues: (3) , reading, setting high expectations, improving the teaching profession, and (4) the American high school -- to name just a few.
I have just returned from a five-day, (5) tour of schools in rural America. We started in Monroe, Louisiana, and finished (6) later in Paducah, Kentucky. What I noticed most about the trip was the weather. Every time I (7) my Success Express School Bus, the local people who came to greet me (8) that the record for (9) had just been broken in their community. In each place, the temperature was always between (10) degrees.
Now, I have very good people on my staff. But the next time we plan a (11) , I’m going to have a (12) on my staff. I took this bus trip through rural America to make an important point that the (13) of children in our nation’s small towns cannot be ignored. Twenty-five percent of all our school children live in (14) all over America.
When it comes to our children, let’s always remember that children everywhere have (15) and (16) . Yet, schools in small towns too often have to (17) because of limited resources and a (18) . On my trip I put a p focus on the issues that matter in rural America, with a particular emphasis on (19) schools, reducing class size, and overcoming the (20) .

题型:选择题

如图是一个简易压水泵,整个手柄是一个弯曲的杠杆。图中箭头表示此时活塞的运动方向。请在图上标出支点O,画出作用在手柄上的最小动力F1,并作出的力臂L1

题型:选择题

根据国际上通行的标准,负债率的警戒线是( )。

A.20%

B.100%

C.50%

D.25%

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