Mark the united nations educational, scientific and cultural

Dịch nghĩa: tổ chức triển khai giáo dục, kỹ thuật và văn hóa truyền thống Liên hòa hợp Quốc, UNESCO, được thành lập năm 1946.

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Mark the letter A, B, C or D to lớn indicate the word/phrases SIMILAR in meaning to the underlined word(s) in each of the following questions.

Question 23: Paris is the ideal place khổng lồ learn French; it’s a beautiful và hospitable city with Institutions for high chất lượng linguistic teaching.

Mark the letter A, B, C or D lớn indicate the correct answer khổng lồ each of the following questions.

Question 19: Everybody in the house woke up when the burglar alarm ______.

Mark the letter A, B, C or D to indicate the word or phrase that is OPPOSITE in meaning khổng lồ the underlined part in each of the following questions.

Question 24: I would be happy to go along with the idea.

Mark the letter A, B, C or D to lớn indicate the correct answer khổng lồ each of the following questions.

Question 8: Although thunder & lightning are produced at the same time, light waves travel faster _____, so we see the lightening before we hear the thunder.

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Mark the letter A, B, C or D to lớn indicate the correct answer to lớn each of the following questions.

Question 12: 500 years ago, the average human ______ was about 40 years.

Read the following passage và mark the letter A, B, C or D to lớn indicate the correct answer khổng lồ each of the questions from 36 lớn 42.

Light from a living plant or animal is called bioluminescence, or cold light, to distinguish it from incandescence or heat-generating light. Life forms could not produce incandescent light without being burned. Their light is produced in chemicals combining in such a way that little or no measurable heat is produced, and the life forms generating it are unharmed. Although bioluminescence is a relatively complicated process, it can be reduced lớn simple terms. Living light occurs when luciferin & oxygen combine in the presence of luciferase. In a few cases, fireflies the most common, an additional compound called ATP is required.

The earliest recorded experiments with bioluminescence in the late 1800s are attributed to lớn Raphael Dubois, who extracted a luminous fluid from a clam, observing that it continued khổng lồ glow in the test tube for several minutes. He named the substance luciferin, which means “the bearer of life”. In further research, Dubois discovered that several chemicals were required for bioluminescence to lớn occur. In his notes, it was recorded that a second important substance, which he called luciferase, was always present. In later study of small, luminous sea creatures, Newton Harley concluded that luciferin was composed of carbon, hydrogen, & oxygen, which are the building blocks of all living cells. He also proved that there are a variety of luciferin and luciferase, specific lớn the plants & animals that produce them.

Much remains unknown, but many scientists who are studying bioluminescence now believe that the origin of the phenomenon may be traced to a time when there was no oxygen in the Earth’s atmosphere. When oxygen was gradually introduced to lớn the atmosphere, it was actually poisonous khổng lồ life forms, plants & animals produced light to lớn use up the oxygen in a gradual but necessary adaptation. It is speculated that millions of years ago, all life may have produced light to lớn survive. As the millennia passed, life forms on Earth became tolerant of, & finally dependent on oxygen, and the adaptation that produced bioluminescence was no longer necessary, but some primitive plants và animals continued to lớn use the light for new functions such as mating or attracting prey.

Ngữ văn 12 Toán học 12 giờ đồng hồ Anh 12 vật lí 12
hóa học 12 Sinh học 12 lịch sử vẻ vang 12 Địa lí 12
GDCD 12 công nghệ 12 Tin học 12
Ngữ văn 11 Toán học 11 giờ Anh 11 trang bị lí 11

Câu hỏi Mark the letter A, B, C, or D on your answer sheet khổng lồ indicate the word(s) CLOSEST in meaning to lớn the underlinded word(s) in each of the following questions.

Câu 1: The United Nations Educational, Scientific và Cultural Organization (UNESCO), was established in 1946

A set up
B found out
C run through
D put away

Lời giải bỏ ra tiết:

Giải thích:

establish (v): thành lập

set up: thành lập, tùy chỉnh thiết lập

run through: coi lại, cầm tắt/ tập luyện, diễn tập

find out: tìm thấy điều gì do tình cờ

put away: để lại đúng vị trí/ trừ khử, một số loại bỏ

Tạm dịch: tổ chức triển khai giáo dục, khoa học và văn hóa Liên hiệp quốc (UNESCO) được ra đời năm 1946

Đáp án:A

Câu 2: Many species have become extinct each year before biologists can identify them.

A destroy
B discover
C endanger
D drain

Lời giải chi tiết:

Giải thích:

identify (v): khẳng định

endanger: tạo nguy hiểm

destroy: phá hủy, bài trừ

drain: làm ráo nước

discover: khám phá, phát hiện nay (=identify)

Tạm dịch: Nhiều loại bị tốt chủng mỗi năm kia khi các nhà sinh vật học rất có thể phát hiện ra chúng.

Đáp án:B

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