Hãy click vào Start để bắt đầu

Kết thúc

Created on By KienThucTheoNamThangKienThucTheoNamThang

Đề 29 thuộc 25 câu sau

Hãy điền mã bài thi đã được cấp (chú ý: Mỗi mã bài thi chỉ được sử dụng 1 lần duy nhất)

1 / 25

1. With more than half the world's annual yield of 50 million tons of soy beans, an important source of protein, is grown in the United States.

2 / 25

2. By 1810 the 23 towns of Hampshire County, Massachusetts, had reached a remarkable uniform of economic development as well as population density.

3 / 25

3. Animals have to cope with and control physical and chemical processes that do not necessarily act to benefit of the animal.

4 / 25

4. Among the most complex crystals are that of silicon dioxide, which has seven different structures at various temperatures and pressures, the most common being quartz.

5 / 25

5. Barium is a soft , heavy, silvery white metallic element that readily reacts with another elements to form useful compounds.

6 / 25

6. Found in all oceans the various species of electric rays use the charge they can generate for both stunning prey or warding off predators.

7 / 25

7. After the United States became independent, the cure of more fertile lands drew steadily New Englanders into the Ohio Valley and the British colony of Upper Canada.

8 / 25

8. Seismic waves generated by an earthquake or large explosion can be recorded thousands of kilometer from their source.

9 / 25

9. The work of Sarah Oarne Jewet, care-nineteenth- century writer, reflects a concern in the alienating consequence, of condustrialization and urbanization.

10 / 25

10. Statistics indicate that approximate every 22 years-- within a range of 3 to 4 years--a major drought occurs in the United States.

11 / 25

11. Electricity is the phenomenon associated with positively and negatively particles charged of matter at rest and in motion, either individually or in great numbers.

12 / 25

12. Cameras of one type or another have been using for more than a hundred years.

13 / 25

13. An activist for women’s rights , Leonora O’Reilly promoted women’s vocational training besides fought for increased wages for garment workers.

14 / 25

14. The developed coutries of the world are using up valuable resources at a rate unprecedented human history.

15 / 25

15. In films, optical printing can be combined with blue- screen photography for produce such special effects as characters seeming to fly through the air.

16 / 25

16. The main attractive at Sequoia National Park is thirty- five groves of giant sequoias, the largest living things in the world .

17 / 25

17. In the period between 1918 and 1939, various political, economic, and geographic factors combined in determine the extent to which a country developed civil aviation.

18 / 25

18. Unique among bivalves, scallops swim extremely well , propelled by jets of water expelled while snapped the shell shut .

19 / 25

19. It is believed that some dinosaurs were intelligent, ability to perform complex activities, and perhaps even capable of social behavior.

20 / 25

20. All living things are made up of one or more cells, and each of these cells were produced by an already existing cell.

21 / 25

21. Like Jupiter and Earth, Saturn is flattened at a poles.

22 / 25

22. The chief commercial source of bromine is ocean water, from what the element is extracted by means of chemical replacement by chlorine.

23 / 25

23. Although the term “corrosion” applies mostly to metals and particularly to their reaction to oxygen, all material are subject to surface deterioration .

24 / 25

24. Inventor Elisha Graves Otis designed the first elevator that it incorporated an automatic brake, which in turn led to the development of the skyscraper.

25 / 25

25. The Executive Mansion, constructed in the 1790’s and now popularly called the White House, is oldest public edifice in Washington,D.C.

Your score is

The average score is 68%