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Many people nowadays have to ....wear...... false teeth when they was middle-aged.
Since the beginning of this century (1)tooth... decay has greatly increased. the amount (2)of... sugar in our food has also increased. Doctors and dentists now know that (3)candy... is the chief cause of tooth (4).decay.. Eskimos' teeth, for example, started to (5)decay.. when they began to eat sweet (6).food..
Long ago doctors did not like (7).to.. treat people's teeth. Barbers and blacksmiths (8)looked... after people's teeth and pulled them (9).out.. when they decayed. Some people thought (10).toothache.. was a punishment from the gods
Twice a day
Move the brush back and forth and make sure to clean the back, front and top sides of each tooth
It can reach all areas of the mouth and doesn’t harm our teeth and gums
Each tooth has five sides, but a toothbrush cleans only three of them. The mouthwash helps us clean teeth completely
There are 5 advices
51.we should brush our teeth at least twice a day - after breakfast and dinner
52.To keep our teeth healthy
53.It can reach all areas of the mouth and doesn’t harm our teeth and gums
54. The mouthwash helps us clean teeth completely
55.there are six advices
Put one suitable word in each space
Energy is one of the (1)___problem___ that many people interested in. It is not an unfamiliar word. It is heard, said, discussed say after day. It is close to everyone's (2)___daily_____life. You turn on the lamp and it is (3)__energy ____ that gives you light. You turn on a TV and it is energy that gives you pictures and sound. You ride a motorcycle and it is energy that gives you (4)____movement__ You cook your meals and it is energy that gives you heat to boil rice
The problem is that the demand for energy is rising and that the price of energy is getting (5)__higher____ and higher. The supply of energy on earth is limited. It can not provide us all forever. The (6)__supply___ of energy in the future is inevitable. Therefore, saving energy is a must if we want to (7)____continue_____ to live in a safe and sound world. If we save energy, the (8)__environtment_____ will be less polluted and our health will be better and we will live a more meaningful life and more happily. Perhaps the best (9)____solution____ to the problem of energy is a source of clean energy coming from the sun : solar energy. This kind of energy is easy available, free, and inexhaustible. Futhermore, it does not cause (10)___pollution___
VI.Read the passage carefully, tlien decide whot hen the following,statement are true T) or false (F)
There are nine planets in our solar system. These planets each have their atmosphere and environmental conditions. Scientists have been trying to research other planets to see if it is possible for life to exist on the other eight own bodies in space.
Mercury and Pluto are probably the most difficult to research because of their position in the solar system. Mercury is so close to the sun that with our current technology a space shuttle would burn up before it even reached its atmosphere. Pluto is so far away that some scientists believe that it may not even be a planot but a large asteroid or comet. A space shuttle can not trave that far away because it is so far away from the sun that it would freeze.
Many scientists also believe that our solar system is not alone in the uni- with us. It is difficult to know if there is life present elaewhere in the universe. for many years to come. yerse. Many believe there are several other systems that share the uhiverse .The universe is a complex structure of space that may continue to be a mysterey for many years to come
32. There are nine planets in our solar system, besides Earth. T
33. It is difficult to study the planet Mercury because it is very close to the sun.T
34. We don't know much about Pluto even though we can see it up close F
35. Pluto may not be a planet, according to some scientists. T
36. Scientists have got enough information about the universe F
#Yumi
Fill in the blank
Tooth decay....STARTS.(start) early in life. It.CONTINUES....(continue) throughout adult life so that many of us will..HAVE LOST..(lose) quite a few of our teeth by the time we ...REACH......(reach) old age.
There..ARE.....(be) two causes of tooth decay.One cause is that many of us...DON'T TAKE ....(not take) proper care of our teeth. Besides that, we eat a lot of sugary food, thus....RESULTS....(result) in tooth decay. Ever since we...ARE...(be) young, we....ARE ENCOURAGED....(encourage) to brush our teeth properlu and regularly. However, most of us...DON'T PAY.....(not pay) attention to this advice and neglect our teeth.