Reading questions and answers of don't let water become human tears &Don't let water turn into human tears. People tend to ignore the nearest thing to themselves. However, recently people begin to focus on the water around us. The reason is that it's going to dry up; People who have cut off water and fish who have left water have the same results. A world without water will be a world without life. However, how to publicize the situation of water shortage, we always feel that we are far away from ourselves. Some people even think that they have the ability to bear the fine and do whatever they want on the water; some use public water to flush watermelons and cars; children use water guns to chase; streets and lanes, The broken faucets of various units are running day and night &Is it necessary for people to realize the value of water on the day when drinking water is restricted? I'm afraid that only when water is cut off can people feel the helplessness of money and realize that what is flowing out of ordinary water pipes is oil, gold and life, We are looking forward to the establishment of a large water-saving law enforcement team, which will patrol all over the country, report on the phone as a household name, publicize the units and individuals who waste water on TV and newspapers, and impose high fines Don't let the last drop of the earth become human tears! Please find out the sentences about the importance of water to human beings from the passage and write them on the line below     ------------------------------------------------------------------------ &What problem did the passage talk about? What solutions do you have?    -------------------------------------------------------------------- &How do you understand the last sentence of the article? -----------------------------------------------------------------------

Reading questions and answers of don't let water become human tears &Don't let water turn into human tears. People tend to ignore the nearest thing to themselves. However, recently people begin to focus on the water around us. The reason is that it's going to dry up; People who have cut off water and fish who have left water have the same results. A world without water will be a world without life. However, how to publicize the situation of water shortage, we always feel that we are far away from ourselves. Some people even think that they have the ability to bear the fine and do whatever they want on the water; some use public water to flush watermelons and cars; children use water guns to chase; streets and lanes, The broken faucets of various units are running day and night &Is it necessary for people to realize the value of water on the day when drinking water is restricted? I'm afraid that only when water is cut off can people feel the helplessness of money and realize that what is flowing out of ordinary water pipes is oil, gold and life, We are looking forward to the establishment of a large water-saving law enforcement team, which will patrol all over the country, report on the phone as a household name, publicize the units and individuals who waste water on TV and newspapers, and impose high fines Don't let the last drop of the earth become human tears! Please find out the sentences about the importance of water to human beings from the passage and write them on the line below     ------------------------------------------------------------------------ &What problem did the passage talk about? What solutions do you have?    -------------------------------------------------------------------- &How do you understand the last sentence of the article? -----------------------------------------------------------------------

1. Please find out the sentences about the importance of water to human beings from the passage, and write them on the following horizontal line. A: the results of people who cut off water are the same as those of fish who leave water. A world without water will be a world without life. 2. What problem does the passage talk about? What methods do you have to solve this problem? A: in today's world, water resources are exhausted

Why do humans have a special preference for the moon?

I think it's mainly because of the image of the moon in people's minds. "Who first saw the moon on the riverside? How did the moon shine on people at the beginning of the year?" (Zhang Ruoxu's "moonlit night on the Spring River") the moon has a very close relationship with human beings. The full moon and the lack of the moon have aroused people's beautiful imagination; the clear moon and the overcast moon have affected the feelings of many literati! So

Why do humans have a special liking for the moon?

It's because it's closest to our earth. In the night sky, the "bright moon" looks so different. Of course, it's like a Yao Ming in a room full of "little people" like you and me. Who would a person like to "love" Yao's gap is much bigger:)

Expand the side of a cylinder to get a square. The radius of the bottom of the cylinder is 8 cm, and its height is 8 cm______ Cm

14 × 8 × 23.14 × 16 = 50.24 (CM). A: its height is 50.24 cm

How long does the earth and the sun live?
If life is over, where should we go?
What should we do if the Sun runs out of fuel before the earth is finished?
What's the fuel for the sun?

According to scientists, the life span of the sun is 10 billion years. Now it has gone through 5 billion years, then the sun can still exist for 5 billion years. This is basically consistent with the calculation results of the above two questions. 5 billion years, what a long time it should be! Looking back on the history of human beings: the early ape man was about 3 million to 1.8 million years ago

A calculation problem of physical specific heat capacity
Put a 100g iron ball in the furnace for a long time, then take out the iron ball and immediately put it into the water with a mass of 200g and a temperature of 15 ℃. The common temperature after mixing is 59 ℃?

C (water) * m * T1 = C (iron ball) * m * T2
C (H2O) * 200 * 44 = C (iron ball) * 100 * (t-59)
Look up the watch. Basically, there are specific heat ones in the books. I don't have them on hand
Solve the equation and get t

The circumference of the bottom surface of a cylinder is 6.28cm. If the cylinder is cut into two and a half cylinders along the diameter, the surface area will be increased by 20cm2, and the volume of the cylinder will be increased

6.28 △ 3.14 = 2 cm
20 △ 2 = 10 square centimeter
10 △ 2 = 5cm The height of a cylinder
3.14 × (2 △ 2) & sup2; × 5 = 15.7 cm3 Volume of cylinder

How about 19 / 24 + 16 / 18 + 5 / 24

General division
Original formula = 57 + 64 + 15 / 72
=136/72
=34/18
=17/9

Tan α = 2, then what is sin & sup2; α + sin2 α / cos & sup2; α + 2Sin & sup2; α?

sin²α+sin2α/cos²α+2sin²α
=The numerator denominator of Sin & # 178; a + 2sinacosa / cos & # 178; a + 2Sin & # 178; a is divided by cos & # 178; a
=tan²a+2tana/1+2tan²a
=4+4/1+8
=8/9

As shown in the figure, a road with the same width is built on the rectangular ground with a width of 20 meters and a length of 32 meters (the shaded part in the figure), and the rest is planted with lawn. To make the lawn area 540 square meters, the width of the road is ()
A. 5m B. 4m C. 3M D. 2m

Let the width of the road be X. according to the meaning of the title, we get 20x + 32x-x2 = 20 × 32-540, sort out (x-26) 2 = 576, square root x-26 = 24 or x-26 = - 24, and solve x = 50 (rounding off) or x = 2, so the width of the road is 2m