If you m 7 by 15 you get 105.4. Ois a colourless gas that forms a largepart of the air on the earth and which is needed by people,animals and plants to live. 题目和参考答案——青夏教育精英家教网—

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3. If you m 7 by 15 you get 105.

4. Ois a colourless gas that forms a large

part of the air on the earth and which is needed by people,animals and plants to live.

3. multiply 4. Oxygen

题目来源：2016年英语周报高一新课标 > 第38期2015-2016年高一新课标

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This is Tornado and severe Weather (龙卷风与恶劣天气) Awareness Week. It's important to know what to do and where to go during severe weather. A Wisconsin couple says an early warning could have been the difference between life and death when a tornado hit last summer.

Larry and Rita Krznarich were camping in. northern Wisconsin last year. The day started off nice,but took a turn for the worse in the evening. So they turned on their weather radio.

ul turned the radio on and fli are was a specific warning'. A storm is about to hit the Turtle- Flambeau. Take cover immediately,says Larry Krznarich. ul said to Rita, Head for the table. going to wam'the neighbors.

Larry joined Rita under the picnic table and within minutes a tornado hit. A falling tree hit Larry and broke his leg bone,but without the warning the couple says things could have been worse.

“The tent,where we may have been if not for the weather radio,was completely covered by trees; all of our things were completely covered/' says Rita Krznarich.

With spring here,people are being reminded to plan for severe weather. That includes buying a weather radio.

The great thing about the weather radio is that it's instantaneous. It's directly from the weather service,so vou,re getting information al of the total amount to continue her treatment. If she doesn,t receive this blood,she will not live to I start kindergarten.

Examples like Brooke,s are becoming all too common these days,with only in 20 Americans donating blood and this number keeps dropping ： each year. These facts are extremely worrying considering that nearly half of us here will need blood sometime in our lives.

You can now see the seriousness of the I problem with the lack of blood donations Fortunately,it is a problem that can be easily I solved. Each and every one of you can be part of the solution. All you have to do is go to the nearest I Red Cross and donate your blood.

28. How does the author explain the problem mentioned in Paragraph 2 ?

A. By answering questions.

B. By making comparisons.

C. By presenting research findings.

D. By describing his own experiences.

29. What qan we learn from the American Red

Cross Web pages?

A. The suffering of patients.

B. The strong need for blood.

C. The efforts of the Red Cross.

D. The benefits of taking vacations.

30. The three-year-old girl Brooke .