Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42.
Life originated in the early seas less than a billion years after the Earth was formed. Yet another three billions years were to pass before the first plants and animals appeared on the continents. Life's transition from the sea to the land was perhaps as much of an evolutionary challenge as was the genesis of life.
What forms of life were able to make such a drastic change in lifestyle? The traditional view of the first terrestrial organisms is based on megafossils - relatively large specimens of essential whole plants and animals. Vascular plants, related to modern seed plants and ferns, left the first comprehensive megafossil record. Because of this, it has been commonly assumed that the sequence of terrestrialization reflected the evolution of 10 modern terrestrial ecosystems. In this view, primitive vascular plants first colonized the margins of continental waters, followed by animals that fed on the plants, and lastly by the animals that preyed on the plant-eaters. Moreover, the megafossils suggest that terrestrial life appeared and diversified explosively near the boundary between the Silurian and the Devonian periods, a little more than 400 million years ago.
Recently, however, paleontologists have been taking a closer look at sediments below this Silurian- Devonian geological boundary. It turns out that some fossils can be extracted from these sediments by putting the rock in an acid bath. The technique has uncovered new evidence from sediments that were deposited near the shores of the ancient oceans - plant microfossils and microscopic pieces of small animals. In many instances, the specimens are less than one-tenth of a millimeter in diameter. Although they were entombed in the rocks for hundreds of millions of years, many of the fossils consist of the organic remains of the organism.
These discovered fossils have not only revealed the existence ofpreviously unknown organisms, but have also pushed back these dates for the invasion of land by multicellular organisms. Our view about the nature of the early plants and animal communities are now being revised. And with those revisions come new speculations about the first terrestrial life-forms
The word "they" refers to ______.
A. rocks
B. shores
C. oceans
D. specimens
Giải bởi qa.haylamdo.com
Đáp án D
Dịch nghĩa: Từ “they” nhắc đến _____________.
A. đá
B. bờ
C. đại dương
D. loài
Giải thích: “In many instances, the specimens are less than one-tenth of a millimeter in diameter. Although they were entombed in the rocks for hundreds of millions of years, many of the fossils consist of the organic remains of the organism” [Trong nhiều trường hợp, có những loài có đường kính còn nhỏ hơn 1/10 milimet. Mặc dù chúng bị chôn vùi trong đá. . .] Dịch nghĩa, ta có thể thấy được “chúng” ở đây là những loài nhỏ bé đó
Many places of history, scientific, cultural, or scenic importance have been designated national monuments.
Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.
KEEPING FIT
Bodies are made to move! They are not (31) ________ for sitting around in front of the television or reading magazines. Keeping fit doesn't mean have to be a super-athlete, and even (32) ________ exercise can give you a lot of fun. When you are fit and healthy, you will find you look better and feel better. You will develop more energy and self-confidence.
Every time you move, you are exercising. The human body is designed to bend, stretch, run, jump and climb. (33) ________it does, the stronger and fitter it will become. Best of all, exercise is fun. It's what your body likes doing most-keeping on the move.
Physical exercise is not only good for your body. People who take regular exercise are usually happier, more relaxed and more alert than people who sit around all day. Try an experiment-next time you are in a bad mood, go for a walk or play a ball game in the park. See how much better you feel after an hour.
A good (34) ________of achievement is yet another benefit of exercise. People feel good about themselves when they know they have improved their fitness. People who exercise regularly will tell you that they find they have more energy to enjoy life. So have (35) ________you'll soon see and feel the benefits
Điền vào ô 35
In England, schooling is mandatory for all children from the age of 5 to 16
Mark the letter A, B, C or D to indicate the word that differs from the other three in the position of the primary stress in each of the following questions
There was _______ fuel in the car. Therefore, we had to stop midway to fill some
Before he went on vacation, Peter left explicit instructions for the decoration of his office.
For me, the film didn't ________ all the enthusiastic publicity it received
In future, cars will still be _________ us, but, instead of petrol, they will run ________anything from electricity to methane gas
Daisy: “Would you mind getting me a cup of coffee?”
John: “_____________.”
I'm sorry I snapped at you like that, but I'm in a bad ________.
