Marie Curie, ______, was awarded a Nobel Prize for her work.

A. the scientist discovered radium

B. whose scientific discovery of radium

C. was the scientist who discovered radium

D. the scientist who discovered radium

Read the following passage on commuting, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 51 to 60.

Many folk cures which have been around for centuries may be more therapeutic than previously suspected. A case in point is that of penicillin Alexander Fleming did not just randomly choose cheese molds to study when he discovered this very important bacteria-killing substance. Moldy cheese was frequently given to patients as a remedy for illness at one time Fleming just isolated what it was about the cheese which cured the patients.

In parts of South America, a powder obtained from grinding sugar cane is used for healing infections in wounds and ulcers. This usage may date back to pre-Colombian times. Experiments carried out on several hundred patients indicate that ordinary sugar in high concentrations is lethal to bacteria. Its suction effect eliminates dead cells and it generates a glasslike layer which protects the wound and ensures healing.

Another example of folk medicine which scientists are investigating is that of Arab fishermen who rub their wounds with a venomous catfish to quicken healing. This catfish excretes a gellike slime which scientist found to contain antibiotics coagulant that helps close injured blood vessels, anti-inflammatory agents, and a chemical that directs production of a glue-like material that aids healing.

It is hoped that by documenting these folk remedies and experimenting to see if results are indeed beneficial, an analysis of the substance be made, and synthetic substances be developed for human consumption.

According to the passage, what are two causes of declining business school enrollment? 

A. Lack of necessity for an MBA and an economic recession 

B. Declining population and economic prosperity 

C. Low salary and foreign competition 

D. Fewer MBA schools and fewer entry-level jobs

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

The trainer’s strategies were directly responsible for the team’s defeat.

A. The trainer directly guided the team, but had no responsibility. 

B. The team’s responsibility is to defeat the trainer’s strategies. 

C. The team lost because the trainer had no direct strategies. 

D. The team lost as a direct consequence of the trainer’s strategies.

Bán kính của quả cầu ở 50^oC là: 8 + 0,15 = 8,15 cm

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