Phân biệt vận chuyển thụ động với vận chuyển chủ động

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

        Until recently, hunting for treasure from shipwrecks was mostly fantasy; with recent technological advances, however, the search for sunken treasure has become more popular as a legitimate endeavor. This has caused a debate between those wanting to salvage the wrecks and those wanting to preserve them.

        Treasure hunters are spurred on by the thought of finding caches of gold coins or other valuable objects on a sunken ship. One team of salvagers, for instance, searched the wreck of the RMS Republic, which sank outside the Boston harbor in 1900. The search party, using side-scan sonar, a device that projects sound waves across the ocean bottom and produces a profile of the sea floor, located the wreck in just two and a half days. Before the use of this new technology, such searches could take months or years. The team of divers searched the wreck for two months, finding silver tea services, crystal dinnerware, and thousands of bottles of wine, but they did not find the five and a half tons of American Gold Eagle coins they were searching for.

        Preservationists focus on the historic value of a ship. They say that even if a shipwreck's treasure does not have a high monetary value, it can be an invaluable source of historic artifacts that are preserved in nearly mint condition. But once a salvage team has scoured a site, much of the archaeological value is lost. Maritime archaeologists who are preservationists worry that the success of salvagers will attract more treasure-hunting expeditions and thus threaten remaining undiscovered wrecks. Preservationists are lobbying their state lawmakers to legally restrict underwater searches and unregulated salvages. To counter their efforts, treasure hunters argue that without the lure of gold and million-dollar treasures, the wrecks and their historical artifacts would never be recovered at all.

The word "sunken" in line 2 is closest in meaning to________.

A. broken

B. underwater

C. ancient

D. hollow

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

Before the grass has thickened on the roadside verges and leaves have started growing on the trees is a perfect time to look around and see just how dirty Britain has become. The pavements are stained with chewing gum that has been spat out and the gutters are full of discarded fast food cartons. Years ago I remember travelling abroad and being saddened by the plastic bags, discarded bottles and soiled nappies at the edge of every road. Nowadays, Britain seems to look at least as bad. What has gone wrong?

The problem is that the rubbish created by our increasingly mobile lives lasts a lot longer than before. If it is not cleared up and properly thrown away, it stays in the undergrowth for years; a semi-permanent reminder of what a tatty little country we have now. Firstly, it is estimated that 10 billion plastic bags have been given to shoppers. These will take anything from 100 to 1,000 years to rot. However, it is not as if there is no solution to this. A few years ago, the Irish government introduced a tax on non-recyclable carrier bags and in three months reduced their use by 90%. When he was a minister, Michael Meacher attempted to introduce a similar arrangement in Britain. The plastics industry protested, of course. However, they need not have bothered; the idea was killed before it could draw breath, leaving supermarkets free to give away plastic bags.

What is clearly necessary right now is some sort of combined initiative, both individual and collective, before it is too late. The alternative is to continue sliding downhill until we have a country that looks like a vast municipal rubbish tip. We may well be at the tipping point. Yet we know that people respond to their environment. If things around them are clean and tidy, people behave cleanly and tidily. If they are surrounded by squalor, they behave squalidly. No much of Britain looks pretty squalid. What will it look like in five years?

What is the tone of the passage?

A. informative     

B. persuasive        

C. pessimistic 

D. frustrated

Trộn 11,2 gam bột Fe với 9,6 gam bột S, sau đó đem nung ở nhiệt độ cao thu được hỗn hợp rắn X. Hoà tan hoàn toàn hỗn hợp X trong dung dịch H₂SO₄ đặc nóng, dư thu được dung dịch Y (chỉ chứa một muối sunfat và axit dư), V lít khí SO₂ (đktc). Giá trị của V là

A. 11,2

B. 26,88

C. 13,44

D. 20,16

“You are a newcomer here, aren’t you?” she asked me.

A. She wanted to know why I did not come here again.

B. She asked me whether I was a newcomer there.

C. She did not know that I am the newcomer.

D. She told me she was a newcomer in that place.

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