Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the question.

You have learned about dinosaurs in school. Maybe you have seen them in museum. But how much do you really know about these animals? Not all dinosaurs were just big reptiles. For years, scientists thought dinosaurs were big, dumb, and cold blooded - in other words, just giant reptiles. Some dinosaurs were huge. But many were about the size of modern-day birds or dogs. Were dinosaurs warm- or cold blooded? Paleontologists- are not sure. But they believe some were intelligent. Of course, no dinosaur was as smart as a human or even a monkey. However, some smaller dinosaurs - like the two-meter (six-foot) Troodon — had fairly large brains.

Was Tyrannosaurus rex a powerful predator? Some scientists think the opposite is true. In the movies, T.rex is often a speedy giant, but in fact, this dinosaur could not run very fast. Physically, it was too large. In reality, T.rex probably moved as fast as an elephant. Also, T. rex had very small arms. Without strong legs or arms, this dinosaur probably wasn’t a powerful hunter. It may have been a scavenger instead, only eating animals that were already dead.

Did an asteroid kill the dinosaurs? An asteroid hit Mexico’s Yucantan Peninsula about 65 million years ago. It created a 180-kilometer (HO-mile) wide crater called Chicxulub. Many believe this asteroid caused the extinction of the dinosaurs. But even before this, dinosaurs were already dying out around the world, for many reasons. At the end of the Cretaceous period, for example, the global climate was changing and Earth's temperature was getting colder.Dinosaurs completely disappeared about 65 million years ago. However, scientists believe modern-day birds are descendants of certain dinosaurs. If this true, then dinosaurs' relatives are still walking - and flying - among us!

(Source: https://www.ducksters.com/animaIs/dinosaurs)

The word "descendants" in paragraph 4 means ______.

A. ancestors

B. phenomena 

C. offspring 

D. scavengers

Hàm số y = x 3 - x 2 - x - 5 đạt cực đại tại.

A . x = - 1 3

B . x = 2

C . x = 3

D . x = 4

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.

A scientist said robots will be more intelligent than humans by 2029. The scientist's name is Ray Kurzweil. He works for Google as Director of Engineering. He is one of the world‘s leading experts on (25)______  intelligence (A.l). Mr Kurzweil believes computers will be able to learn from experiences, just like humans. He also thinks they will be able to tell jokes and stories, and even flirt. Kurzweil‘s 2029 prediction is a lot sooner than many people thought. The scientist said that in 1999, many A.I. experts said it would be hundreds of years (26)____ a computer was more intelligent than a human. He said that it would not be long before computer (27)______ is one billion times more powerful than the human brain.

 Mr Kurzweil joked that many years ago, people thought he was a little crazy for predicting computers would be as intelligent as humans. His thinking has stayed the same but everyone else has changed the way they think. He said: “My views are not radical any more. I've actually stayed (28)______. It's the rest of the world that's changing its View.” He highlighted examples of high-tech things we use, see or read about every day. These things make us believe that computers have intelligence. He said people think differently now: "Because the public has seen things like Siri (the iPhone’s voice-recognition technology) (29)______ you talk to a computer, they've seen the Google self-driving cars."

(Source: https://breakingnewsenglish.com)

Điền vào số 27

A. intelligent

B. intelligently 

C. intelligence 

D. intelligences

Kết quả thí nghiệm của các dung dịch X, Y, Z, T với thuốc thử được ghi ở bảng sau:

Các dung dịch X, Y, Z, T lần lượt là

A. Lòng trắng trứng, anilin, fructozơ, axit fomic.

B. Lòng trắng trứng, natri panmitat, glucozơ, axit fomic

C. Saccarozơ, natri axetat, glucozơ, phenol

D. Lòng trắng trứng, lysin, saccarozơ, anđehit fomic.

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

To preserve anonymity, the contributors' names were removed.

A. conserve

B. cover

C. presume

D. reveal