it wasn't obligatory to submit my assignment today.

Olga was about vĩ đại say something about the kết thúc of the movie. He was stopped by his friends right then

A. Hardly had Olga intended vĩ đại say something about the kết thúc of the movie before he was stopped by his friends

B. Only after Olgahad said something about the kết thúc of the movie was he stopped by his friends

C. Were it not for Olga’s intension of saying something about the kết thúc of the movie, he would not be stopped by his friends

D. It was not until Olga was stopped by his friends that he started vĩ đại say something about the kết thúc of the movie

Read the following passage and mark the letter Ay B, C, or D on your answer sheet vĩ đại indicate the correct word or phrase that best fits each of the numbered blanks from 25 vĩ đại 29.

Why tự some people take revenge on others? Why aren’t we able vĩ đại sort out our problems without seeking vĩ đại get (25)______ with those who have hurt us? Apparently, we are (26)______ experiencing a deeply rooted part of human nature. Our desire for revenge comes from the brain’s limbic system, the most primitive part of the brain and one that we share with all animals. (27)______, when someone confronts us, we often prefer attacking verbally or physically rather kêu ca try vĩ đại work out a solution together.

However, unlike animals, we also possess a highly evolved cerebral cortex which allows us vĩ đại plan and analyse – and this can make revenge more kêu ca just a(n) (28) ______ reaction. A person who feels they have been wronged may even enjoy planning a creative and appropriate act of revenge. Some people suggest that taking revenge can be seen as a positive move, allowing you vĩ đại work through your negative emotions. However, it can also be dangerous, and you may risk finding yourself in a situation (29)______ rapidly gets out of hand

Điền dù 29

A. who 

B. where 

C. when 

D. which 

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Her eyes are red and puffy ______ she has been crying a lot

A. although 

B. since 

C. because of 

D. despite 

Read the following passage and mark the letter A, B, C, or D on your answer sheet vĩ đại indicate the correct answer vĩ đại each of the questions from 35 vĩ đại 42.

Nature has always provided a stimulus for inventive minds. Early flying machines clearly were an attempt to emulate the freedom of birds. Architects and engineers have often consciously modeled buildings on forms found in nature. A more recent example of the inspiration given by nature is the invention of Velcro®. The inventor of this now common fastening device noticed that small burrs attached vĩ đại his dog's coat grasped the hairs by means of tiny hooks. This led him vĩ đại invent a synthetic fabric whose surfaces mimic the clasping properties of this natural seedpod.

Animals and plants have evolved solutions vĩ đại the kinds of problems that often interest engineers and designers. Much current research in material science is concerned with actively examining the natural world, especially at the molecular level, for inspiration vĩ đại develop materials with novel properties. This relatively new field of study is sometimes known as biomimetics, since it consciously attempts vĩ đại mimic nature.

Researchers have investigated several interesting areas. For example, they have studied how the molecular structure of antler bone contributes vĩ đại its amazing toughness, how the skin structure of a worm contributes vĩ đại its ability vĩ đại crawl, how the sea cucumber softens its skeleton and changes shape so sánh that it can squeeze through tiny gaps in rocks, or what gives wood its high resistance vĩ đại impact. These investigations have led vĩ đại several breakthroughs in the development of composite materials with remarkable properties.

Predictions for future inventions that may be developed from these lines of research include so-called smart structures that design and repair themselves in a similar way vĩ đại a variety of processes in the natural world. For example, engineers have envisaged bridges that would detect areas heavily stressed by vehicle movement or wind. The bridge structure would then automatically add or move material vĩ đại the weak areas until the stress is reduced. The same principle might be used vĩ đại repair damaged buildings. Other new materials that have been imagined are substances that would copy photosynthesis in green plants in order vĩ đại create new energy sources. The potential impact of biomimetic research is so sánh great that the twenty-first century may come vĩ đại be known as the "Age of Materials."

As inferred from the passage, what would be the advantage of a product that mimics photosynthesis? 

A. It could be used vĩ đại create green plants

B. It could help vĩ đại meet future energy needs

C. It could be an aid in repairing green areas

D. It could khuông the basis of twenty-first century materials

A scientific principle has a life expectancy of approximately a decade before it drastically revised or replaced by newer information

A. expectancy

B. approximately

C. drastically revised

D. newer

The quấn scolded Laura for that minor mistake. He now feels really bad about it

A. The quấn wishes he did not scold Laurafor that minor mistake

B. The quấn wishes Laura had not made that minor mistake

C. If only the quấn had not scolded Laura for that minor mistake

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D. The quấn regretted vĩ đại scold Laurafor that minor mistake