Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 46 to 55

Tsunami is a Japanese word which means harbour wave and is used as the scientific term for seismic sea wave generated by an undersea earthquake or possibly an undersea landslide or volcanic eruption. When the ocean floor is tilted or offset during an earthquake, a set of waves is created similar to the concentric waves generated by an object dropped into the water. Most tsunami originate along Ring of Fire, a zone of volcanoes and seismic activities, 32,500 km long that encircles the Pacific Ocean. Since 1819, about 40 tsunamis have struck the Hawaiian Islands.

A tsunami can have wave lengths, or widths, of 100 to 200 km, and may travel hundreds of kilometers across the deep ocean, reaching speech of about 725 to 800 kilometres an hour. Upon entering shallow coastal waters, the wave, which may have been only about half a metre high out at sea, suddenly grow s rapidly. When the wave reaches the shore, it may be 15m high or more. Tsunamis have tremendous energy because of the great volume of wave effected. They are capable of obliterating coastal settlements.

Tsunamis should not be confused with storm surges, which are domes of water that rise underneath hurricanes or cyclone and accompanying storm surge killed an estimated 500,000 people in Bangladesh in 1970. The tsunami which struck south and southeast Asia in late 2004 killed over 200 thousand people.

What killed an estimated 500,000 people in Bangladesh?

A. A tsunami

B. A cyclone and accompanying storm surge

C. A high tide

D. Flooding

Cho các phản ứng xảy ra theo sơ đồ sau:

X + NaOH → t o Y + Z ( 1 ) Y ( rắn ) + NaOH ( rắn ) → CaO , t o CH 4 + Na 2 CO 3 ( 2 ) Z + 2 AgNO 3 + 3 NH 3 + H 2 O → t o CH 3 COONH 4 + 2 NH 4 NO 3 + 2 Ag ( 3 )   

Chất X là

A. vinyl axetat

B. etyl fomat

C. metyl acrylat

D. etyl axetat

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions from 1 to 10.

Television’s contribution to family life in the United States has been an equivocal one. For while is has, indeed, kept the members of the family from dispersing, it has not served to bring them together. By dominating the time families spend together, it destroys the special quality that distinguishes one family from another, a quality that depends to a great extent on what a family does, what special rituals, games, recurrent jokes, familiar songs, and shared activities it accumulates.

“Like the sorcerer of old,” writes Urie Bronfenbrenner, “the television set casts its magic spell, freezing speech and action, turning the living into silent statues so long as the behavior it produces – although there is danger there – as in the behavior it prevents: the talks, games, the family festivities, and arguments through which much of the child’s leaning takes place and though which character is formed. Turning on the television set can turn off the process that transform children into people.”

Of course, families today still do special things together at times: go camping in the summer, go to the zoo on a nice Sunday, take various trips and expeditions. But the ordinary daily life together is diminished – that sitting around at the dinner table, that spontaneous taking up of an activity, those little games invented by children on the spur of the moment when there is nothing else to do, the scribbling, the chatting, the quarreling, all the things that form the fabric of a family, that define a childhood.

Instead, the children have their schedule of television programs and bedtime, and the parents have their peaceful dinner together. But surely the needs of adults are being better met than the needs of children, who are effectively shunted away and rendered untroublesome.

If the family does not accumulate its backlog of shared experiences, shared everyday experiences that occur and recur and change and develop, then it is not likely to survive as anything other than a caretaking institution.

According to the author, what distinguishes one family from another?

A. Doing ordinary things together 

B. Watching television together

C. Celebrating holidays together 

D. Living together