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把小鼠血红蛋白的mRNA加入到大肠杆菌提取液中，在一定条件下，能合成出小鼠的血红蛋白，这个事实说明（      ）

A.控制蛋白质合成的基因位于mRNA上

B.小鼠的mRNA能使大肠杆菌向小鼠转化

C.所有生物的遗传密码都相同   

D.小鼠的mRNA在大肠杆菌体内控制合成了小鼠的DNA

母亲节到了，小强为妈妈准备了一件生日礼物，包装如下图。现在用彩带把这个包装盒捆起来，接头处长18cm。小强需要准备多少厘米的彩带？

（15+8+10）×4+18=150（cm）
答：小强需要准备318cm的彩带。 ×
[错因分析]本体错在 ________
[正确解答]________

一台电风扇的价格是188元，一个电饭煲的价格是137元。
（1）一台电风扇的价格比一个电饭煲贵多少元？

（2）买一台电风扇和一个电饭煲一共要多少元？

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

Baidu is not a doctor

When people1．(face) with a health or nutrition question, it’s2．(increasing) common to go online and diagnose (诊断) themselves. But the Internet is full of health warnings with no regulation to get rid3．the wrong advice, some of which4．(be) extremely unreliable and5．(danger)!

Also, search engines rank results by popularity rather than accuracy(准确性), so facts can be tricky to find. It’s worth6． (check) if the writer of an online piece is a proper expert. Anyone can call7．(they) a “diet expert”, “nutritionist” and even a “doctor”--given it could refer to qualifications(资格) like a PhD．But remember, only officially recognized practicing doctors as well 8． dietitians have degrees in giving medical suggestions. So if you’re unsure and still wondering9．the chocolate diet really does work or not, then it pays to make10．appointment with you dietitian or doctor. The truth is out there, and you just need to look in the right place!

有学者说： “ 西欧国家希望通过建立一个经济共同体，来振兴经济并降低战争的可能性。 ” 这段材料表明建立 “ 欧共体 ” 的目的是

A ．对付苏联，加强实力 B ．摆脱美国，独立发展

C ．发展经济，避免战争 D ．结成同盟，称霸世界

下列关于物态变化现象的说法中，错误的是：

A．冰棒冒“白气”是汽化现象                    B．霜的形成是凝华现象

C．冰冻的衣服变干是升华现象                      D．积雪融化是熔化现象

根据所掌握的文化或背景知识，选择正确答案。

(    )61.Stephen Hawking is a famous __________ who is from England.

      A. pop singer    B. physical scientist    C. soccer player   D. computer programmer

(    )62. Which of the following animals come from Australia?

      A. Elephants    B. Lions             C. Koalas           D. Penguins

(    )63.In France, if you say “It was delicious.” That means        .

     A. you want more food                 B. you like eating there

    C. you’re full                                 D. the food is not delicious enough

(    )64.Father’s Day is on       .

      A. the second Sunday in June                B．the third Sunday in June     

      C. the second Sunday in May              D．the fourth Thursday in May

(    )65.Soft colors like pink and light blue in a restaurant make people __________.

     A. spend more time eating their meals            B. feel hungry

     C. look good and healthy                               D. eat quickly and leave

(    )66.The theme of Disneyland is __________.

     A. Disney movies and Disney characters.    B. to eat with Mickey Mouse.

     C. take a ride on the boat.                 D. to buy Disney gifts.

   

下列研究领域中，不在“863计划”之列的是(   )

A.海洋高技术         B.外太空技术        C.信息技术           D.生物技术

340×5的积末尾有( )个0．
A. 1 B. 2 C. 3 D. 没有

山西某校八年级三班举行“宪法在我心中”主题活动，在“我与宪法’'故事分享环节,同学们积极进行了分享。下列选项中,做法和启示等都正确的是

小钱:我发现网上有人高价收购我国军事方面的照片,我便打12315进行了举报,维护了国家安全。启示我们要积极践行宪法、依法履行公民的基本义务

小孙:本周六,我高高兴兴地参加了三班在小区举行的“宪法进万家”法治宣传活动。启示我们学习宪法,积极参与宪法宣传活动，有利于进一步增强同学们的宪法意识

小杨:我们小组主动把社会实践活动成果《关于解决校门口乱摆摊点影响校园卫生与安全问题的建议》发到“市长信箱”里，直接促进了这一问题的解决。启示我们要理解和认同宪法的价值,依法行使政治权利,参与政治生活。

小周:我老家邻居王伯伯强迫自已14岁的女儿去打工，我依据宪法的相关规定偷偷进行了举报,结果王伯伯被乡政府批评后,改正了错误。启示我们宪法具有最高的法律效力,确实比刑法更加严厉

A.小孙  小杨  小周                     B.小钱  小孙  小杨  小周

C.小孙  小杨                           D.小杨  小周

《爱的能力》阅读理解

选一选，填上合适的量词。（填序号）
①朵 ②颗 ③只 ④片 ⑤棵 ⑥个
一（______）小石子 一（______）梅花 一（______）竹叶
一（______）蘑菇 一（______）大树 一（______）小狗

 ——Why are you so wet?           

 ——I _____ up the sweet potatoes in the rain all morning.

A. dug               B. have dug              C. was digging        D. have been digging

    Compassion is a desire within us to help others．With effort, we can translate compassion into action．An experience last weekend showed me this is true．I work part-time in a supermarket across from a building for the elderly．These old people are our main customers, and it’s not hard to lose patience over their slowness．But last Sunday, one aged gentleman appeared to teach me a valuable lesson．This untidy man walked up to my register(收款机) with a box of biscuits．He said he was out of cash(现金), had just moved into his room, and had nothing in his cupboards．He asked if we could let him have the food on trust．He promised to repay me the next day．

    I couldn’t help staring at him．I wondered what kind of person he had been ten or twenty years before, and what he would be like if luck had gone his way．I had a hurt in my heart for this kind of human soul, all alone in the world．I told him that I was sorry, but store rules didn’t allow me to do so．I felt stupid and unkind saying this, but I valued my job.

    Just then, another man, standing behind the first, spoke up．If anything, he looked more pitiable．“Charge it to me,” was all he said.

    What I had been feeling was pity．Pity is soft and safe and easy．Compassion, on the other hand, is caring in action．I thanked the second man but told him that was not allowed either．Then I reached into my pocket and paid for the biscuits myself．I reached into my pocket because these two men had reached into my heart and taught me compassion.

41．The aged gentleman who wanted to buy the biscuits ______.

       A．promised to obey the store rules           

       B．forgot to take any money with him

       C．hoped to have the food first and pay later

       D．could not afford anything more expensive

42．Which of the following best describes the old gentleman?

      A．kind and lucky                                     B．poor and lonely

       C．friendly and helpful                              D．hurt and disappointed

43．The writer acted upon the store rules because ______.

       A．he wanted to keep his present job         

       B．he felt no pity for the old gentleman

       C．he considered the old man dishonest     

       D．he expected someone else to pay for the old man

44．What does the writer learn from his experience?

      A．Wealth is more important than anything else.

       B．Helping others is easier said than done.

       C．Experience is better gained through practice.

       D．Obeying the rules means more than compassion.

为了探究食品上滋生微生物的某些条件，将新鲜猪肉和水加热煮沸一段时间，冷却，取澄清的猪肉汁进行如下实验：

步骤一：将等量的猪肉汁分别加入标有A、B、C的三个锥形瓶中。静置1小时，然后用脱脂棉塞住瓶口。

步骤二：把A锥形瓶放入电冰箱的冷藏室内，冷藏室的温度为6 ℃。

步骤三：把B锥形瓶放在实验室的桌子上，此时室温是25 ℃。

步骤四：把C锥形瓶加热煮沸后，放在实验室的桌子上，此时室温是25 ℃。

步骤五：几天后，用放大镜对三个锥形瓶内的猪肉汁进行观察，结果记录在下表内（观察不到微生物，用“－”表示；观察到有微生物，用“+”表示；微生物较多用“++”表示；微生物很多用“+++”表示）。

锥形瓶	观察结果
A	＋
B	＋＋＋
C	－

请回答下列问题。

（1）比较步骤三、四，你认为实验中的变量是      。（填选项字母）

A.温度    B.水分    C.是否有活的微生物

（2）通过A、B两个锥形瓶的实验及现象，可以得出的结论是            。

（3）根据以上实验，请你写出一条日常生活中保存食品的方法：            。

函数f（x）=+lg（1+x）的定义域是（　　）

A．（﹣∞，﹣1） B．（1，+∞） C．（﹣1，1）∪（1，+∞） D．（﹣∞，+∞）

英国阿伦·布洛克在《西方人文主义传统》里认为“文艺复兴时期人文主义按其性质来说是属于个人主义的，它既不是一种信条，也不是一种哲学体系；它不代表任何一个利益集团，也不想把自己组织成一种运动，它只以受过教育的阶级为对象，这是人数有限的城市或贵族精英”。据此，作者认为文艺复兴时期人文主义运动的局限性主要是                                 (　　)

A．对思想解放作用有限        B．是无组织的少数人行动

C．局限于上层知识分子        D．对政治领域的影响有限

我国首先发展外向型经济的地区是（    ）

  A．珠江三角洲    B．南方地区      C．西双版纳   D．黄土高原

在一个数的末尾添上两个0，这个数就扩大到原来的100倍。 （____）

Good friends mean a lot in our life. I used to have some friends who I could　1　. It was my 4th grade in the elementary school that I had my two friends Nina and Nancy. I had known them since the first grade and we had gotten along quite well. Now the memory of their appearance is still　2　in my mind.

The following year I went to a new school. I was shy and didn’t　3　much. The first day I made no new friend and I felt　4　. The next day right after school as we were waiting for our school　5　, I felt someone　6　on my hair, I quickly turned “Why did you do that? ”

“I’m sorry I was stretching. ”Giving her a　7　look, I turned around without saying anything. I had seen my teacher’s eyes　8　so　I didn’t want to get into　9　. Then I felt a　10　on my shoulder and turned around again. “What is it? ”“Well umm . . . I have seen you for the first time. For the reason that I was　　11　yesterday I was wondering if you’re a new student. ”I nodded　　12　and she smiled “Welcome to De Zavala Primary School! I’m Alondra, nice to meet you! ”Then the school bus came and we got on.

And that’s how it all　13　. She was a warm-hearted girl　14　she introduced me to new people and I made a lot of new friends! And I swore I would　15　them because they saved me from the　16　and they didn’t even know. One day, when we were in the 8th grade, Alondra told me she had always wanted a best friend and then I　　17　along. I felt so　18　to hear about it. Now I’m in the college and I　19　have many friends: Logan, Mari, Amold, Maggie, and those whose　20　you don’t know.

1. A. go with                               B. get along

C. put up with                              D. count on

2. A. clean             B. blank            C. fresh            D. invisible

3. A. eat               B. talk             C. know         D. gain

4. A. good              B. angry            C. bored            D. lonely

5. A. doctor            B. dinner           C. teacher          D. bus

6. A. pull              B. push         C. catch            D. put

7. A. angry             B. cold             C. friendly         D. excited

8. A. close             B. widen            C. narrow           D. brighten

9. A. agreement     B. danger           C. trouble          D. touch

10. A. knock            B. tap              C. strike           D. beat

11. A. absent           B. lazy             C. busy         D. strange

12. A. anxiously                            B. attentively

C. nervously                                D. sincerely

13. A. went         B. appeared     C. began            D. worked

14. A. when         B. why              C. as               D. how

15. A. care for                             B. thank for

C. send for                                 D. seek for

16. A. happiness                            B. loneliness

C. poverty                                  D. fear

17. A. came         B. marched      C. hurried          D. got

18. A. honored          B. stable           C. uneasy           D. sad

19. A. even         B. just             C. only             D. still

20. A. characters                           B. names

C. friends                                  D. grades