[题目]市场上有加酶洗衣粉.即在洗衣粉中加入了少量的碱性蛋白酶.它的催化活性很强.衣物上的汗血渍及人体排放的蛋白质油渍遇到它.皆能水解而除.下列衣料中不能用加酶洗衣粉洗涤的是( )①棉织品②毛织品③腈纶织品④蚕丝织品⑤涤纶织品⑥锦纶织品A．①②③ B．③④⑤ C．③⑤⑥ D．②④ 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】市场上有加酶洗衣粉，即在洗衣粉中加入了少量的碱性蛋白酶，它的催化活性很强，衣物上的汗血渍及人体排放的蛋白质油渍遇到它，皆能水解而除，下列衣料中不能用加酶洗衣粉洗涤的是（）

①棉织品

②毛织品

③腈纶织品

④蚕丝织品

⑤涤纶织品

⑥锦纶织品

A．①②③ B．③④⑤ C．③⑤⑥ D．②④

【答案】D

【解析】加酶洗衣粉含有生物催化剂酶，可以催化蛋白质的分解反应。棉花织品中主要成分是纤维素，可以用加酶洗衣粉洗，①不符合题意。羊毛织品中羊毛的主要成分是蛋白质，不能用加酶洗衣粉洗，②符合题意。腈纶织品的主要成分是合成纤维，可用加酶洗衣粉洗，③不符合题意。蚕丝织品中主要成分是蛋白质，不能用加酶洗衣粉洗，④符合题意。涤纶织品属于化学纤维中的合成纤维织造而成的，可用加酶洗衣粉洗，⑤不符合题意。锦纶织品属于合成纤维，可用加酶洗衣粉洗，⑥不符合题意。

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【题目】对某酸性溶液（可能含有Br-、SO42-、H2SO3、NH4+）分别进行如下实验：①加热时放出的气体可以使品红溶液褪色；②加碱调至碱性后，加热时放出的气体可以使湿润的红色石蕊试纸变蓝；⑨加入氯水时，溶液略显黄色，再加入BaCl2溶液时，产生的白色沉淀不溶于稀硝酸。对于下列物质不能确认其在溶液中是否存在的是( )

A．Br- B．SO42- C．H2SO3 D．NH4+

【题目】七选五

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。

Building Trust in a Relationship Again

Trust is a learned behavior that we gain from past experiences. ____1____ Trust is a risk. But you can’t be successful when there’s a lack of trust in a relationship that results from an action where the wrongdoer takes no responsibility to fix the mistake.

Unfortunately, we’ve all been victims of betrayal. Whether we’ve been stolen from, lied to, misled, or cheated on, there are different levels of losing trust. Sometimes people simply can’t trust anymore. ____2____ It’s understandable, but if you’re willing to build trust in a relationship again, we have some steps you can take to get you there.

●____3____ Having confidence in yourself will help you make better choices because you can see what the best outcome would be for your wellbeing.

●____4____ If you’ve been betrayed, you are the victim of your circumstance. But there’s a difference between being a victim and living with a ＂victim mentality＂. At some point in all of our lives, we’ll have our trust tested or violated.

●You didn’t lose ＂everything＂. Once trust is lost, what is left? Instead of looking at the situation from this hopeless angle, look at everything you still have and be thankful for all of the good in your life. ____5____ Instead, it’s a healthy way to work through the experience to allow room for positive growth and forgiveness.

A. Learn to really trust yourself.

B. It is putting confidence in someone.

C. Stop regarding yourself as the victim.

D. Remember that you can expect the best in return.

E. They’ve been too badly hurt and they can’t bear to let it happen again.

F. This knowledge carries over in their attitude toward their future relationships.

G. Seeing the positive side of things doesn’t mean you’re ignoring what happened.

【题目】A、B、C、D 4种元素的核电荷数依次增加，他们的离子电子层数相同且最外层电子数均为8。A原子的L层电子数与K、M层电子数之和相等，D原子的K、L层电子数之和等于电子总数的一半。回答下列问题：

（1）这4种元素的符号依次是A________，B________，C________，D________。它们的原子半径由大到小的顺序是_________________。

（2）分别写出这4种元素的最高价氧化物对应水化物的化学式：_________________，

分别比较酸性和碱性的强弱：_________________。

（3）写出气态氢化物的化学式：_______________。比较其稳定性：______________，理由是_________。

【题目】A

阅读下面短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

DOGS DRIVE CAR

Auckland, New Zealand

After two months of learning, Monty, and Porter were able to drive an automobile around a racetrack. ＂We wanted to prove how smart rescue dogs are,＂ animal behaviorist Mark Vette says. Vette first used voice commands and treats to teach the dogs how to turn a steering wheel and how to change gear (换挡).

The dogs’ ride only accelerated up to 7.5 miles an hour, and trainers could stop the auto using a remote control.

GOLDEN ZEBRA

Kailua-Kona, Hawaii

Zoe the zebra’s markings are special. The animal has white and golden stripes. Zoe’s appearance resulted from a rare condition called amelanosis (黑素缺失症). Her body doesn’t make enough melanin(黑色素), the substance in an animal’s skin and hair cells that produces color. ＂Only 25 other golden zebras are known to exist in the world,＂ says Ann Goody, who runs the wildlife refuge where Zoe lives. In the wild, life may be difficult for animals with amelanosis because predators (捕猎者) can easily spot them. But Zoe is protected at her refuge.

COCKATOO MAKES TOOLS

Vienna, Austria

When Figaro the cockatoo spots food lying just out of reach from his cage, he builds a tiny wooden tool to sweep the tasty prize in his way.

The bird first revealed his talent when a stone he was playing with rolled out of his cage. The cockatoo couldn’t reach the stone. So he flew away and returned with a small branch, slipping it through the fence to slide the stone toward him.

Wondering if he would do it again, scientists placed a nut exactly where the stone had been. This time, Figaro pulled out a small piece of wood in his cage and dragged the nut toward him.

【1】 If Zoe the zebra is set free in the wild, she will ___________.

A. meet no natural predators

B. not get along with other zebras

C. manage to make enough melanin

D. be easily found for her appearance

【2】What’s special about Figaro the cockatoo?

A. He is particular about his food.

B. He is extremely fond of stones.

C. He is good at drawing support from outside forces.

D. He can tell the difference between stones and nuts.

【3】What is the text mainly about?

A. Amazing animals.

B. Ways to help animals.

C. Animals’ unique talents.

D. Tips on training animals.

【题目】完形填空

阅读下面短文，从短文后各题所给的A、B、C、和D四个选项中，选出可以填入空白处的最佳选项。

Mother's Day Surprise: Baby born in car on way to hospital

A Kentucky woman received a Mother's Day surprise on Sunday when she gave birth to her son while on the way to the hospital. Christy High said her son was ready to come as she was 1 in the back seat of the family car.

"I tried 2 with the baby and asked for a few more minutes, but he wasn't 3 ,"High joked. "He 4 when he came out, and that was the first time my husband knew what was 5 ."He said, "What was that?" and I said, "It's our new baby Oliver. It's 6 ."

"I wouldn't have it any other way than how it went 7 ,"she added. "He will always be the best Mother's Day 8 I ever got. "High, who is now a mom of two, told ABC News that she went into 9 in the early morning hours of May 14. 10 her husband, Jon High, was driving her to the hospital, her 11 broke, she said. Oliver Joseph High was born two weeks 12 at 6:10 a.m, 13 6 pounds,10 ounces. High, a brave mother, 14 her son herself and placed him on her chest 15 she immediately began nursing it.

Staff Clark Memorial in Jeffersonville, Indiana, 16 the family upon their arrival. High said her husband is extremely 17 about the coming of the baby. "He was very 18 being the driver, I'm sure,span> but he was my rock star," she added. "He got us here 19 and he is a(n) 20 father."

Oliver joins big sister Rowan,3,who was horn on St.Patrick's Day in 2014.

【1】 A. carrying B. riding C. comforting D. attending

【2】 A. arguing B. debating C. reasoning D. discussing

【3】 A. acting B. answering C. working D. cooperating

【4】 A. cried B. yelled C. shouted D. called

【5】 A. going on B. moving on C. keeping on D. insisting on

【6】A. right B. awful C.OK D. thankful

【7】 A. up B. down C. away D. off

【8】 A. gift B. greeting C. ceremony D. party

【9】 A. action B. effect C. business D. labor

【10】 A. If B. Although C. The moment D. As

【11】 A. car B. water C. leg D. seat

【12】 A. early B. late C. sharp D. exactly

【13】 A. feeling B. tasting C. weighing D. smelling

【14】 A. patted B. kissed C. observed D. delivered

【15】A. which B. where C. what D. that

【16】A. questioned B. encouraged C. greeted D. shocked

【17】A. happy B. upset C. worried D. mad

【18】 A. eager B. serious C. patient D. nervous1

【19】 A. hurriedly B. skillfully C. safely D. gently

【20】A. amusing B. amazing C. warm-hearted D. strong-willed

【题目】What does the woman mean?

A. She disbelieves her son.

B. She feels very sorry for her son.

C. She wants her son to use a new key.

【题目】C

Do you think Great Britain and the United States are alike? Winston Churchill once joked that the people of Britain and the people of America are separated(分离) only by their language. Do you think that is true? The British and the Americans both speak English as the official language. However, each uses some different words. We Americans are similar to the British. After all, our country was once owned by Great Britain, so we have a lot in common. But there are many differences between us.

Great Britain has a king or queen, and the leader of the government is the Prime Minister. The United States has no kings or queens. Our leader is the President.

Both the British and Americans use pounds and ounces, pints, quarts, and gallons. Both use miles, yards and feet. Our money is different, though. The British use pounds and pence. Americans use dollars and cents.

Driving in a car is very different in England. They drive on the left side of the road. We drive on the right. What we call the hood of the car, the British call the ＂bonnet＂. British cars run on ＂petrol＂, which we call gasoline.

In our everyday lives, we do many of the same things as the British. But we describe them differently. A young mother here might push a baby in a baby carriage. A British mom pushes a ＂pram＂. The British watch the ＂telly＂, while we watch TV. We like to eat French fries, but the British call them ＂chips＂. Millions of Americans drink coffee, but most British prefer tea.

So we are different in many ways. But we stay friendly anyway.

【1】Winston Churchill’s words mean that ____________.

A. Britain and the US are very similar

B. the people of Britain and the US are friendly

C. the languages of Britain and the US are the same

D. there are many differences between Britain and the US

【2】 Which of the following is used by the British?

A. TV. B. Pram. C. Hood. D. French fries.

【3】From Paragraph 4, we can know the differences between Britain and the US in ____________.

A. the government B. money C. eating D. traffic

【4】What is the best title for the text?

A. We stay friendly B. A common language?

C. English as the official language D. Differences between Britain and the US

【题目】（8分）下表是缺碘与不缺碘的两类人群中，血液中与甲状腺活动密切相关的两种激素的含量状况。

分泌腺体	激素名称	不缺碘人群激素含量	缺碘人群激素含量
分泌腺体	激素名称	不缺碘人群激素含量	补碘前	补碘后
甲状腺	甲状腺激素	正常	降低	正常
垂体	A	正常	B	正常

（1）表中A是______________，B应________________。甲状腺激素对垂体分泌激素A起________作用。在甲状腺激素的分泌调节中，控制枢纽是________________________________。

（2）长期缺碘，成年人会表现出：①喜热、畏寒等体温偏低现象；②少言寡语、反应迟钝及嗜睡等现象。现象①说明甲状腺激素的相关作用是____________；现象②说明该激素对神经系统的作用是______________。通常，食用碘盐可以防治碘缺乏病。

（3）体液调节与神经调节比较，作用范围_____，需要__________的运输。

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