VII . Fill in the blank in the following passage with ONE suitable word from the box :

students ; bulbs ; coal ; off ; rural ; electricity ; natural ; energy ; save ; wastes .

With the development of science and technology , more and more (1)......... is used every day . Nowadays , many (2)............. areas in Vietnam have been electrified , and more (3).............. is needed . If everyone (4) .............. energy , it will quickly run out , (5)............ at school should learn how to (6)......... energy , for example , they should turn (7)............... the electric lights when they leave their classrooms .

Moreover , we may waste electricity at home if we use a lot of light (8).............. By not wasting energy , we will save a lot of (9) ................. resources , such as (10).......... and oil .

Chọn đáp án đúng:

Light pollution is the existence of too much unwanted, artificial light in the environment. Too much light pollution has (5) ________ effects on people. It upsets ecosystems, has bad health effects, and wastes energy. In upsetting ecosystems, light pollution poses a serious threat in particular to night wildlife, having damaging impacts on plant and animal physiology. It can affect the migratory patterns of animals, change competitive interactions of animals, and cause physiological harm. The rhythm of life as we know it is controlled by the natural daily patterns of light and dark. (6) ______, the disruption to these patterns does harm to the ecological dynamics.
With respect to adverse health effects, many species, especially humans, are dependent on natural body cycles, and the production of melatonin, (7) ______ are regulated by light and dark (e.g., day and night). If humans are exposed to light while sleeping, melatonin production can be affected. This can lead to sleep
disorders and (8) ______ health problems such as increased headaches, worker fatigue, stress, some forms of obesity due to lack of sleep and increased anxiety. Health effects are not only due to over- illumination or excessive (9) _____ of light over time, but also improper spectral composition of light.
Question 5: A. essential    B. helpful    C. positive    D. negative
Question 6: A. However    B. Conversely    C. Whereas    D. Therefore
Question 7: A. that    B. whom    C. which     D. whose
Question 8: A. another    B. the other    C. other     D. others
Question 9: A. coverage    B. inauguration    C. exposure    D. contact

I. Fill in each blank with a word from the box

Children have a tendency to run very fast (1)__________ the street, or choose any spot to cross because it may seem empty, or approaching vehicles may be (2) __________ away. That can be dangerous as passing (3) __________ do not slow down unless there is a signal or a crossroad. This is the (4)____________ why pedestrian crossings and intersections are the (5)__________ places to cross. Children should cross (6)_________ at an intersection and use the pedestrian crossing. If they are in a small neighborhood where there is no (7)___________ should (8)____________ the rule 'stop, look both ways and cross'.

With the development of science and technology, more and more (4)…………… is used everyday. Nowadays, many (5)……………areas in Vietnam have been electrified, and more energy is needed. If everyone (6) ……………. energy, it will quickly run out. (7) ……………. at school should learn how to save energy, for example, they should turn off the electric lights when they leave their classrooms. Question 4: A. energy B. money C. cars D. books Question 5: A. rural B. rich C. city D. urban Question 6: A. wastes B. waste C. save D. saves Question 7: A. doctors B. drivers C. students D. farmers