The scientist does not study nature it is useful to do so. He studies it because he takes pleasure in it.A. until B. though C. because D. Unless 题目和参考答案——青夏教育精英家教网—

题目内容

The scientist does not study nature ________ it is useful to do so. He studies it because he takes pleasure in it.

A. until B. though C. because D. Unless

【解析】

试题分析：本题考查连词。句意为：这个科学家研究自然不是因为这样做有用。他研究它是因为从中得到了快乐。until直到……为止；though虽然；because因为；unless除非。由于后半句的because可知和前面形成对称关系。尤其要注意错误选项unless的选择，unless相当于if…not，如：You'll fail in French unless you work harder. 你要是不再加把劲儿, 法语就考不及格了.。故选C

考点：考查连词

练习册系列答案

相关题目

Parents of teenagers will have heard something like this: Leave me alone or I told you, we didn’t do anything at school. Maybe they’ve had a door or two slammed on them. And maybe they feel that all of their interactions are arguments.

Sarah loves hanging out with her friends. That’s not surprising. Sarah is 16 and it’s typical for teenagers to spend time with their peers, especially their pals. So it makes sense when she gets mad about having to leave get-togethers with her friends early to meet her parents’ rule that she must stay at home after 9 p. m.

“Sometimes my parents don't let me do anything,” Sarah says. “It seems that their rules are for a 10-year-old child, not a 16-year-old one.” Sarah admits she often responds to her parents’ rules by openly complaining about them. And to get her pride again, she sometimes does what she wants behind her parents’ backs.

Sarah’s unwillingness to obey her parents may remind you of your own behavior toward your mom and dad. And the good news for young people is that it is normal for teens to rebel against their parents. “All teens go through a process of separating from their parents in order to gain some independence and a sense of identity,” says John Brightman, a child and adolescent psychologist. “Sometimes this process is accompanied by some anger, defiance(反抗), and eye-rolling. But this stage of shifting relationships is an important part of growing up.”

【写作内容】

1．以约30个词概括上文的主要内容；

2．然后以约120个词谈谈你对“青少年心理叛逆”的看法，内容包括：

1）你认为青少年产生心理叛逆的原因；

2) 你熟悉的青少年典型叛逆期的行为表现；

3) 你是如何解决自己在叛逆期与父母之间的矛盾的。

【写作要求】

1．在作文中可以使用自己亲身的经历或虚构的故事，也可以参照阅读材料的内容，但不得直接引用原文中的句子；

2．作文中不能出现真实姓名和学校名称。

【评分标准】概括准确，语言规范，内容合适，篇章连贯。

The United Nations says hunger kills more people every year than AIDS, malaria and tuberculosis ________.

A. combining B. combined

C. being combined D. having combined

You are not ________ to unemployment benefit if you have never worked.

A. accustomed B. resigned

C. entitled D. Submitted

— Did you stay at the party until the very end last night?

— No, I left as early as was ________ with politeness.

A.content B. consistent

C. patient D. Permanent

The snow cap of Mount Kilimanjaro, famous in literature and beloved by tourists, initially formed some 11,000 years ago, but will be gone in two decades, according to researchers who say the ice fields on Africa’s highest mountain shrank by 80 percent in the past century.

Lonnie G. Thompson,one professor from Ohio State University, said measurements using modern navigation satellites show that the oldest ice layers on the famous mountain were deposited during an extremely wet period starting about 11,700 years ago.The mountain appears in literature, most notably Ernest Hemingway’s “The Snows of Kilimanjaro” and some ancient beliefs in Africa hold the mountain to be a sacred place.

But a temperature rise in recent years is destroying the 150-foot-high blocks of ice that gave Kilimanjaro its unique white cap.“The ice will be gone by about 2030,” said Thompson. The disappearing ice already has reduced the amount of water in some Tanzanian rivers and the government fears that when Kilimanjaro is bald of snow the tourists will stop coming.

“Kilimanjaro is the number one foreign currency earner for the government of Tanzania,” said Thompson. “It has its own international airport and some 20,000 tourists every year. The question is how many will come if there are no ice fields on the mountain.”

Africa was not alone in the global drought. Thompson said other records show that civilizations during this period collapsed in India, the Middle East and South America.

Researchers put markers on the ice field blocks in 1962 and Thompson said measurements using satellites show the summit of the ice has been lowered by about 56 feet in 40 years. The margin of the ice also has moved back more than six feet in the past two years, much smaller than before.

“That’s more than two meter’s worth of ice lost from a wall 164 feet (50 meters) high,” said Thompson. “That’s an enormous amount of ice.”

1.The snow cap of Mount Kilimanjaro ________.

A. will disappear in two centuries

B.first developed some 11,000 years ago

C. resulted in a temperature rise in recent years

D. has decreased to 80 percent over the past century

2.According to Thompson, the disappearing of the snow may mainly influence________.

A. the local water supply

B. the local tourism

C. the weather in the surrounding areas

D. the government foreign currency exchange

3.The underlined word “margin”inParagraph6 means__________.

A. center B. Top C. edge D. back

4.The writer’s tone in this article is___________.

A. concerned B. casual

C. doubtful D. angry

5.Which of the following can be the best title for this passage?

A.Risks of Visiting Mount Kilimanjaro

B. ASacred Place— Kilimanjaro

C. Africa’s Highest Mountain

D. Kilimanjaro Snow Cap May Melt Soon

What makes tomorrow’s successful citizens_________ the ability to cope with a changing world as well as the responsibility towards community.

A. is B. are C. has D. have

I had been looking forward to my sister Patti’s visit for weeks. I had the whole thing planned. It would be one of our usual short-but-sweet get-togethers: a nice meal, some shopping, an outing with our kids.

When Patti arrived, lunch was cooking on the stove. Everything was perfect. Then, a few minutes later, a terrific clap of thunder rattled the window. A storm had sped in out of nowhere. The lights went out — for the next 12hours.

It seemed like a disaster. Our long-awaited plans! My homemade lunch! Seeing the unfinished pork, we had to eat cold food. We didn’t know what we can do next. The children asked, “Can we watch TV?” “The TV isn’t working.” I explained. So they begged, “Well, how about a video, then?” “How about computer games?” “Can’t you just microwave some popcorn?” I quickly realized just how much we all took electricity for granted.

But as the evening wore on, I also realized I had been taking something else for granted: the power of relationships. The point of my sister’s visit was not that we could go shopping. It didn’t matter whether we took our kids to the zoo. What counted were the people, not the plans.

We all sang old camp songs and put on shadow plays. After the kids eagerly went to bed with their own flashlights, Patti and I brought chairs onto my small front porch (门廊). At first we talked about our ruined plans. Then we sat back silently, listening to the rain dropping through the trees. I hadn’t sat out there in ages, and night air felt cool. We began to talk about our friends. We planned our parents’ upcoming anniversary party. Our conversation went to places it hadn’t gone in years.

I realized that what Patti and I had been looking forward to most was each other — something that often seemed vague on past short visits. Those get-togethers have always been enjoyable, but I must admit that they tend to melt together in my memory. That night the lights went out, on the other hand, they will burn brightly for a long time.

1.The author planned to do something for her sister’s visit except __________.

A. seeing a film B. doing some shopping

C. cooking a nice meal D. going out with their kids

2.Why did the lights go out?

A. Because thunder rattled the window.

B. Because a storm came.

C. Because someone played a trick on them.

D. Because they planned so.

3.It can be inferred from the passage that__________.

A. their get-togethers were usually long

B. the author prepared a party for Patti’s visit

C. the author and Patti talked a lot this time

D. the lunch was ready when Patti arrived

4.On the night without power, the author was at last.

A. mad B. grateful C. sad D. awful

5.What did the author try to convey through this passage?

A. A lot of things can be done when the electricity is cut off.

B. The plan should be more careful.

C. We should always turn off the lights.

D. What counts are the people, not the plans.

It seems that people are gradually losing their smartness as smartphones become increasingly important assistants in their lives. As we rely too much on technology instead of our brains, many people have lost three basic abilities.

The first skill many people have lost is remembering phone numbers. Because phone numbers are stored in smartphone contacts, there's now no need to dial a number or look at it again. This is fine until you need to call someone for help, only to find your phone is not around.

And some people may also have lost their sense of direction because navigation apps can guide people anywhere they want. People get so dependent on them that when they can't use their smartphones, they get lost and anxious.

But the worst lost skills may be social ones, meaning that some people are becoming socially inept(无能的)People often bury themselves in their smartphones. As we're too absent-minded by what's happening in the virtual(虚拟的)some of us have lost conversational skills and sometimes can't even distinguish whether a person is happy or not.

Last August, researchers at the University of California, Los Angeles, studied 51 students aged 11 and 12 who had over five hours' screen time every day. Their task was to tell the emotions of 48 pictures of faces that were happy, sad, angry or scared.

The children made an average of 14. 02 mistakes at the beginning. But after a five-day camp without electronic products, they made only 9.41 mistakes on average.

Luckily, people still have a chance to get these abilities back. You should try to keep your parents' numbers in mind for emergencies. You should also pay more attention to street signs and stores , which will help you to draw a mind map and stop you from getting lost. And the easiest solution to social skill loss is to take a break from electronic products.

1.The underlined sentence in the second paragraph implies that .

A. you are able to turn to others for help

B. others are able to call you anytime and anywhere

C. others are unable to get in touch with you by smartphone

D. you are unable to contact others without your smartphone

2. The experiment by researchers indicated that without electronic products, one could .

A. recognize more facial expressions correctly

B. lose the sense of direction frequently

C. tell different emotions immediately

D.more pictures of faces easily

3.Overusing smartphones, people will probably according to the passage

A. lose face-to-face communication skills

B. have no sense of numbers

C. weaken their senses of hearing and sight

D. fail to find their destination

4.The passage mainly tells us that many people are .

A. becoming no smarter than smartphones

B. benefiting from smartphones' intelligence

C．losing some basic abilities because of using samrtphones

D．trying hard to break away from smartphones’intelligence

5.The writer’s attitude towards electronic products is .

A．critical B．sympathetic

C．supportive D．optimistic

试题分类