--- Do you know the Water Cube（水立方）at all?---...

--- Do you know the Water Cube（水立方）at all?

--- No, this is the first time I _________ here.

A．was              B．have been         C．came             D．am coming

高二英语单项填空困难题查看答案及解析

We all know that water is tasteless. But it happens from time to time: you pick up the bottle of water you didn’t finish yesterday, and it tastes strange. Most often, you tend to drop the bottle in the trash bin, believing that the water has gone bad. But is it true?

According to Time, of course not, taste has little to do with quality of water.

According to Time, when water is exposed to the air for 12 hours, carbon dioxide interacts with the H2O in the water, and the pH value lowers slightly. As a result, the water has a different taste.

“But it’s most likely safe to drink,” Norwegian expert Truls Krogh told Science Nordic. “If the water is covered and of good quality to start with, in principle it can last a thousand years. That’s because when water is fresh, it contains little organic matter. As long as water is held in clean glasses or bottles, no pollutants will enter it to harm our health.”

People in countries like the US, the UK and Australia usually drink tap water. According to Time, if tap water is drunk within six months, the chlorine (氯气) in the water will be enough to kill any bacteria and keep it safe to drink.

However, there are also some exceptions. If you accidentally put your fingers into water or store water in unclean containers day after day, microorganism (微生物) will enter the water.

With the help of surrounding temperature, and sunlight streaming through windows, these microorganisms multiply quickly. Sooner or later, the water will be in the charge of the unfriendly bacteria. And if you drink the water too often, then you’re more likely to be ill.

And what about water in plastic bottles? Heat and plastic are a bad combination, US researcher Kellogg Schwab stresses. When plastic bottles are used at high temperatures, they produce a chemical called BPA. BPA is something that affects hormones (荷尔蒙) and research has tentatively linked it to “several health damage, including heart disease and cancer”, Time reported.

Schwab suggests replacing disposable (一次性的) plastic bottles with the refillable containers made of metal or glass to deal with BPA.

1.The purpose of the first paragraph is to ________________.

A. show an example B. draw a conclusion

C. analyze a phenomenon D. introduce a topic

2.Which of the following may Truls Krogh agree?

A. If the water tastes different, we shouldn’t drink it.

B. The water held in a clean container is likely safe to drink.

C. Although kept fresh, water may still have much organic matter.

D. Covered water can last for a thousand years.

3.What can we infer from the passage?

A. BPA does little harm to our health.

B. Tap water is always safe to drink.

C. Microorganisms are easy to produce in the heat.

D. Disposable plastic bottles have been banned already.

4.What can be the best title of the passage?

A. Why Water is Tasteless B. How to Get Clean Water

C. Does Water Really Go Bad? D. Learn to Protect Water

高二英语阅读理解困难题查看答案及解析

— What do you think of the bottled water?

— I don’t like it at all. It is reported that much nutrition, including some minerals, ______ while it is being processed.

高二英语单项填空中等难度题查看答案及解析

Do you know what your child is going to do when the school bell rings at the end of the day? More than 14 million students leave school every afternoon and have nowhere to go, since they do not have access to(使用) affordable after­school opportunities. According to the National Youth Violence Prevention Resource Center (NYVPRC), 90% of the Americans think all youths should have access to after­school programs(课外活动项目), but two­thirds of parents say they have trouble finding programs locally. The bad news is that the situation may be getting worse.

After­school hours are the peak time for juvenile crimes and risky behaviors, including alcohol(酒精) and drug(药物) use. NYVPRC states that children who do not spend any time in after­school activities are 49 percent more likely to use drugs and 37 percent more likely to become a teen parent. Kids are also at the highest risk of becoming a victim of violence after school, particularly between the hours of 2 p.m. and 6 p.m. The highest amount of juvenile crime occurs between 3 p.m. and 4 p.m., when most children are dismissed from school(放学).

The NYVPRC defines after­school programs as safe and structured activities that offer children opportunities to learn new skills. The skills students learn can range from technology and math to reading and art. Some programs also offer opportunities for internship (实习), community service, or mentoring. These programs have been shown to improve academic achievement, as well as relieve the stresses(减压) on working families. A report by the U.S. Department of Education and the U.S Department of Justice shows that students in after­school programs have fewer behavioral problems and more self­confidence, and can handle conflicts better than students who are not involved with these programs. In addition, according to the Harvard Family Research Project, after­school programs help students from low income families overcome the inequities (不公平) they face in the school system.

1.Which of the following is TRUE according to the first paragraph?

A．Most parents don't believe in after­school programs.

B．Students are not willing to attend after­school programs.

C．It's difficult for parents to find after­school programs for their kids.

D．Parents don't care about where their children go after school.

2.The underlined word “juvenile” in Paragraph 2 has a similar meaning to  “________”.

A．student           B．teenager          C．adult             D．campus

3.We learn from the second paragraph that________.

A．the teachers should watch over kids after school

B．children are dismissed from school too late

C．after­school hours are a risky time for children

D．children should go home immediately school is over

4.The author of the passage probably________.

A．fully supports after­school programs

B．doubts the effects of after­school programs

C．believes structured activities are useless for children

D．thinks students today are too stressed

5.What is the theme of the passage?

A．Prevention of juvenile crimes.

B．Risks kids face after school.

C．A research report on the stresses of the students.

D．The benefits of after­school programs.

高二英语阅读理解中等难度题查看答案及解析

— How do you find the oil price now?

— It _____ up all the time and no one knows when it will become stable.

高二英语单项填空困难题查看答案及解析

— Do you know who left the lights on all night long?

— It seems that Zhang Peng is ______. He is the last one ______.

A. blaming; leaving                        B. blamed; left

C. to blame; to leave                                   D. to be blamed; to be left

高二英语单项填空中等难度题查看答案及解析

--- Have you finished the report?

--- No. I ______ it all this week.

A．will do            B．had done          C．have been doing    D．have done

高二英语单项填空中等难度题查看答案及解析

——Do you know who left the computer on all night long?

——It seems that Tom is_______. He played computer games yesterday afternoon

A. blaming    B. blamed     C. to blame    D. to be blamed

高二英语单项填空中等难度题查看答案及解析

—Do you think our team will win the game?

—I don’t know. But this is the last chance. We _____ them to.

A. hope                        B. require                                     C. prefer                              D. demand

高二英语单项填空简单题查看答案及解析

—Do you think our team will win the game?

—I don’t know. But this is the last chance. We _____ them to.

A. hope                  B. require                            C. prefer                      D. demand

高二英语单项填空简单题查看答案及解析