I.Put the following words in the correct order to make meaningful sentences.

1.solar energy/save/fossil fuels/of/resources/instead/we/natural/by/can/using.

2.some/a tree/tired/the man/minutes/and/he/and/for/felt/so/hungry/slept/under/sat down.

3.the result/the earth/an/are/abrupt/tidal waves/movement/shift/in/of/the/of/underwater.

4.capital/80/home/about/east/is/north/of/to/my/the/the/vilage/kilometers.

5.before/you/energy/preparing/turning/save/on/food/kitchen/by/in/carefully/stove/can/the/the.

I.Write the complete sentences,using the words and phrases given.

1.Our friend/birthday/next week/we/give/present/that/he/dream/long time.

2.The/clearly/teacher/explain/lessons/faster/we/understood/them.

3.Scientists/think/how/use/rise/fall/tide/produce/electricity.

4.Tam/Linh/who/not come/class/yesterday/explain/absence/teacher.

5.I/be/surprise/that/people/walk/grass/but/no one/tell/them/it.

Fill in each gap with ONE suitable word:

When drawing human(1)......,children often make the head two large for the(2).......of the body.A recent study offers more insight(3)......this common disproportion in children illustration.(4)......part of the study researchers asked children between four and seven years old to(5)......several drawings of men.When they drew(6)......views of male figures,the size of the head was noticeably(7)......However,when the children drew rear view of man,the size of the head was(8)......so exaggerated. Researchers suggest that children draw bigger heads when they know they must(9)......room for facial details.Therefore,the odd head size in children's illustrations is a(10)......of planning and not an indication of a poor sence of scale.

Fill in each gap with one suitable word from the box(there are two extra words).

A popular theory (1)......the evolution of the universe is known as the Big Bang Model.According to the model,at some time between ten(2)......twenty billion years ago,all present matter and energy(3)......compressed into a small ball only a few kilometers in diameter.It was,in effect,an atom(4)......contained in the form of pure anergy all of the components of the entire universe.Then,at a moment in(5)......that astronomers refer to as T=0,the ball exploded,hurling the energy(6)......space. Expansion occurred.As the energy cooled,most of it became(7)......in the form of protons,neutrons and(8)......These original particles(9)......to form hydrogen and helium,and continue to expand.Matter formed into galaxies with stars and(10)......

1 vật có trọng lượng là 7 N,treo vật vào lực kết rồi nhúng vật đó vào nước thì thấy lực kế chỉ 3 N.

a)Tính F\(_A\)

b)tính khối lượng,thể tích,khối lượng riêng,thể tích phần chất lỏng bị chiếm chỗ.

Hãy viết chương trình tính diện tính,chu vi của hình tròn.

Giới thiệu đôi dép lốp trong kháng chiến.

Đừng chép mạng.