1. exist | /ig-ZIST/ |
-to have actual being | |
Some individuals believe that aliens exist. | |
2. detect | /dih-TEKT/ |
-to discover the existence of | |
The security system detected intruders within the vicinity. | |
3. extract | /ik-STRAKT/ |
-to get, pull, or draw out, usually with special effort, skill, or force | |
Bees extract nectar from flowers. | |
4. gradually | /GRAJ-oo-uh-lee/ |
-by small degrees or little by little | |
The old building is expected to gradually fall apart. | |
5. form | /fawrm/ |
-to begin to exist | |
As anticipated, dark clouds started to form. |
The remains of three mammoths were found in the 1970s, but scientists did not have the means to detect and extract DNA back then. DNA is the carrier of genetic information in the cells of creatures.
As stated by scientists, DNA can provide more comprehensive data regarding the organism than fossils. However, DNA may get gradually damaged. Good thing is that new research methodologies are now available for scientists to repair older DNA. With the continuous development of these methods, scientists anticipate they can work with up to three million years old DNA in the future.
Scientists emphasized that these ancient discoveries can offer substantial information about how new species are formed.
1. | What is a mammoth? |
2. | Where were the three mammoth remains found? |
3. | Can fossils provide more accurate details than DNA? |
1. | What do you make of this discovery? |
2. | What can you say about the pace of research method development? |
3. | Do you agree that studying extinct species can be beneficial in the future? |
4. | What do you know about mammoths? |
5. | Do you think more and more people should be aware of such discoveries? |
Grammar 文法 |
Pronunciation 発音 | Vocabulary 単語 |
Comprehension 理解 |
|
---|---|---|---|---|
GOOD | 文法の誤りはほとんどなく、完全な文章で話すことができる | ほとんどの単語をはっきりと正しく発音することができる | 習った表現を適切に使うことができる | 文章を理解し、質問に正しく答えることができる |
FAIR |
文法の誤りはあるが、完全な文章で話すことができる | 発音の練習が必要な言葉がいくつかある | たまにミスはあるが、習った表現を適切に使うことができる | 文章を完全に理解するのは難しく、質問に正しく答えられないときもある |
POOR |
文章で話すのは難しく、単語だけで話すことができる | 発音の練習が必要である | 習った単語と表現を少しだけ使うことができる | 文章を理解するのは難しく、質問に答えるのは難しい |