Many students today suffer from problems, since they are under too much pressure.A. recreation-related B. pollution-relatedC. stress-related D. pollution-free 题目和参考答案——青夏教育精英家教网—

题目内容

Many students today suffer from ________ problems, since they are under too much pressure.

A. recreation-related B. pollution-related

C. stress-related D. pollution-free

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–Are you tired?

-- _______. I can’t walk on a step farther and I am dying for some water.

A. Not really B. Not a bit

C. Not at all D. Not a little.

My family three members and now my family visiting Shanghai.

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

Hot water is converted to electricity by a turbine. The underlined word can be replaced by ______.

A. conveyed B controlled. C. chosen D. changed

We can broaden our horizons through _________ to new things.

A. hazard B. exposure C. recreation D. vapor

Use For

Use for mechanically generated dusts, mists from processing minerals including coal, iron ore, silica, cotton, flour and certain other substances in concentrations up to ten times the Occupational Exposure Standard or according to local regulations.

Do Not Use For

Do not use for paint spraying and sandblasting applications or for protecting against gases and vapors. Do not use in atmospheres containing less than 19.5% oxygen, as this respirator does not supply oxygen. Not for use in oil mist atmosphere.

Use Limitations

1. The wearer must first be trained in the proper use and fit tested before using this respirator.

2. Do not use this respirator when concentrations of contaminants are immediately dangerous to life or health.

3. Leave the contaminated area immediately if breathing becomes difficult, or dizziness or other distress occurs.

4. Discard and replace respirator if it becomes damaged or breathing resistance becomes excessive.

5. Inspect respirator before each use to ensure it is in good working condition.

6. Do not alter, wash, abuse or misuse this respirator.

7. Do not use with beards or other facial hair or other conditions that prevent a good seal between the face and the sealing edge of the respirator.

8. Can be used up to the limits specified by applicable government regulations for this product.

9. Failure to follow all instructions and warnings on the use of this respirator and/or failure to wear this respirator during all times of exposure can reduce respirator effectiveness and may result in illness or permanent disability

10. Maximum operating temperature: +50°C.

Caution

Care should be taken when using the product at low temperatures as excessive moisture may cause alves(呼吸阀) to freeze.

Storage Conditions and Shelf Life

Shelf life of unopened product is 5 years from date of manufacture when stored within temperature range of -20°C to +30°C and at less than 80% relative humidity.

Warning

This respirator helps protect against certain particles. Misuse can result in sickness or death. For proper use, see supervisor or user instructions in the box or contact 3M Co. Ltd.

1.The passage mainly tells us _________.

A. what this product is

B. why should we buy this product

C. how to protect us against dusts and mists

D. how to use and store the product properly

2.What is the meaning of the underlined word “respirator” in Paragraph 2?

A. Glasses.

B. Face mask.

C. Protective gloves.

D. Protective clothing.

3.In which condition can this product be stored?

A. Temperature: 50°C; Humidity: 40%

B. Temperature: 50°C; Humidity: 80%

C. Temperature: 25°C; Humidity: 40%

D. Temperature: 25°C; Humidity: 80%

Everyone is forgetful, but as we age, we start to feel like our brains are slowing down a bit—and that can be a very annoying thing. 1.Read on for some techniques worth trying.

1. 2.

People who regularly made plans and looked forward to upcoming events had a 50 percent

reduced chance of Alzheimer's disease (早老性痴呆症), according to a recent study.

Something as simple as setting a goal to have a weekly coffee date with a friend will do. There's evidence that people who have a purpose in life or who are working on long or short-term goals appear to do better. In other words, keep your brain looking forward.

2. Go for a walk.

Mildly raised glucose (葡萄糖) levels can harm the area of the brain that helps you form memories and physical activity can help get blood glucose down to normal levels. In fact,exercise produces chemicals that are good for your brain. 4.

3. Learn something new.

Take a Spanish class online, join a drawing club, or learn to play cards. A study found that mental stimulation (刺激) limits the weakening effects of aging on memory and the mind. But the best thing for your brain is when you learn something new and are physically active at the same time. 5. Or go dancing with your friends.

A. Focus on the future.

B. This can be espocially harmful to the aged.

C. It should be something like learning gardening.

D. So take a few minutes each day to do some reading.

E. But don't worry if your schedule isn't filled with life-changing events.

F. Luckily, research shows there is a lot you can do to avoid those moments.

G. In other words, when you take care of your body, you take care of your brain.

________leaves the room last ought to turn off the lights.

A. Anyone B. The person C. Whoever D. Who

A 90-year-old Kenyan grandmother has become the world's1. (old) elementary school student. Ms Sitienei, also2. (know) as "Gogo", is from a small village in Kenya. She is studying at the local school. Ms Sitienei has spent most of her life 3. (help) to deliver babies. She wants to be able to read and write so that she can pass on her skills. She never had a chance to be educated when she was a child because her parents 4. not afford to send her to school. 5. she expects most is to set an example to younger people and inspire all the children in her village 6. (study).

When she7. (apply) to the school, school headmaster Mr Kinyanjui accepted the student with some8. (hesitate). But now he is happy that Gogo is at the school and is very proud of her. Mr Kinyanjui said, "She is doing pretty well considering her age. I can say I have seen a big difference in this school 9. she came."

"I want to say to the children of the world, especially girls, that education will be your wealth," Ms Sitienei said. " 10. education, you can be whatever you want — a doctor, a lawyer or a pilot."

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