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实行计划生育政策后,我国每年新增人口数量依然较大,其主要原因是(    )

A . 人口出生率高 B . 人口自然增长率高 C . 人口死亡率低 D . 人口基数庞大
如图所示,900多年前,僧人怀丙把两艘很大的木船并排拴在一起,船上装满了泥沙。他让人们把船上的泥沙卸到河里,最终把沉落江中的铁牛打捞上来。当把泥沙不断卸到河里的过程中,假定船体浸在水中的体积不变,下列分析不正确的是(  )

A . 船受到自身重力、泥沙和人的压力、绳子的拉力和浮力作用 B . 船受到江水的浮力不变 C . 绳子对铁牛的拉力变小 D . 铁牛对江底的压强变小
林则徐是中国近代彪炳青史的民族英雄。他的主要功绩是(    )
A . 领导虎门销烟 B . 拟定《海国图志》 C . 抗击沙俄入侵 D . 指挥黄海海战
25℃时,纯水中存在的平衡:H2O H+ OH , 下列叙述正确的是(   )
A . 将水加热,Kw增大,pH不变 B . 加入稀盐酸,平衡逆向移动,c(H+)降低 C . 加入氢氧化钠溶液,平衡逆向移动,Kw变小 D . 加入少量固体CH3COONa,平衡正向移动,c(H)降低
完形填空

    Do you know Mike, my best friend? Maybe you will say, "Yes, I know him very well. He is very 1. He never studies hard and isn't good at all the subjects." But you are wrong. It seems that he has 2a lot. He didn't use to like to study. But now he works 3 hard. In the past, he used to watch TV and play computer games very late at night. He used to get up at eight o'clock in the morning and hurry to school 4 breakfast. At school, he didn't use to listen to the teachers 5. He didn't use to do his homework. He always copied 6 papers in the tests. But now he doesn't come to school late. He gets up very early and goes to 7. He says that he must 8 his health. He walks to school after breakfast. At school, he often studies with a group and asks other students for help when he has 9. His classmates usually help him with homework. He has made great 10 this term and he got an A in a test last week.  

(1)
A . active B . lonely C . lazy D . silent
(2)
A . changed B . spent C . worked D . spoke
(3)
A . exactly B . really C . quickly D . patiently
(4)
A . without B . with C . for D . after
(5)
A . early B . carefully C . quietly D . carelessly
(6)
A . another's B . the other's C . others' D . others
(7)
A . movies B . shop C . play D . exercise
(8)
A . look for B . look up C . look through D . look after
(9)
A . trouble B . interest C . fun D . worries
(10)
A . mistakes B . progress C . decisions D . friends
某同学利用图所示装置性测量某种单色光的波长。实验时,接通电源使光源正常发光;调整光路,使得从目镜中可以观察到干涉条纹。回答下列问题:

  1. (1) 以下实验器材在图中未标出:A.毛玻璃屏、B.双缝、C.光源、D.单缝、E.滤光片。在图中从左至右合理的顺序为C、E、、A。
  2. (2) 若想增加从目镜中观察到的条纹个数,该同学可____;
    A . 将单缝向双缝靠近 B . 将毛玻璃屏向靠近双缝的方向移动 C . 使用间距更大的双缝 D . 将毛玻璃屏向远离双缝的方向移动
颜真卿是唐朝大画家。
—_________ that man?

—He's my father.

A . Where's B . What's C . Who's
☆☆里应该填
选出你所听到的句子(   )
A . It is two dollars and forty-five cents. B . It is one dollar and ten cents. C . It is three dollars and eighty-five cents.
已知函数 的定义域为 .
  1. (1) 若 ,求实数 的取值范围;
  2. (2) 求函数 的定义域 .
已知函数f(x)=kx2+2x为奇函数,函数g(x)=afx﹣1(a>0,且a≠1).

(Ⅰ)求实数k的值;

(Ⅱ)求g(x)在[﹣1,2]上的最小值.

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。

Time is on your side

    How frequently do you say "I don't have time"? Quite often, I guess. Every time we say those words, they make us feel weak and out of control. You are in control of your hours and your life.

    I don't as easy as simply turning off the TV. But here are two steps that will help you take back control and get time on your side.

   

    Be honest: do you Spend an hour or two visiting Weixin and QQ every day? Are you spending time with people that you don't really like just to please them? Are there meetings you attend that you can politely refuse?

    It's time to get real about the hours that add up to a lot of dissatisfying nothing. Think how you can cancel daily activities that are not useful.

    Change your language.

    Words matter. They have power. Saying "I don't have time" is an excuse for not wanting to do something. Here are some good, empowering alternatives (选择):

    "I choose not to start that project until next year."

    ""

    "I'd love to go out this weekend but have important work I need to do first."

    Get better at saying no. Use little pockets of time (friend running late, car stuck in traffic, meeting ending 10 minutes early) to do some productive thinking. All these things can add up over time more than you believe!

A. Identify your blocks.

B. But you are likely wasting a lot of it!

C. I really don't have enough time to do it.

D. Replace them with things that satisfy you.

E. Take no notice of all those unimportant messages on your phone.

F. I'd love to read that book — I'll get to it after my homework is complete!

G. When you don^ have a plan for your life, someone else will plan it for you.

How long did it take Alan to finish the test?
A . Half an hour. B . An hour. C . Two hours.
—How can I use the new machine?

—You'd better read the ________before you use it.

A . magazines carefully B . instructions carefully C . orders careful
计算机网络系统中的资源可分成:数据资源、软件资源和(    )。
A . 设备资源 B . 程序资源 C . 硬件资源 D . 文件资源
选词填空。

连续      陆续      继续

①我们跳上一只船。

②虽然下雨了,但运动会举行。

③这学期我二次取得月考第一名。

下列物体中,属于光源的是(   )
A . 萤火虫 B . 月亮 C . 镜子 D . 幻灯屏幕
People can get many kinds of seafood ________ the oceans.
A . from B . to C . in D . for
若sinx﹣2cosx=0,求 的值.
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