A. why red meat is harmful B. how beneficial fish are

C. what makes fish healthful D. how red meat is replaced

27. We can learn from the passage that .

A. human beings get omega-3s from their food

B. omega-3s are only found in fish and soybeans

C. omega-3s are the raw material for saturated fats

D. polyunsaturated fats constitute human molecules

28. The A.H.A. didn’t recommend omega-3 pills, because

A. it had no knowledge of the safe dose of omega-3

B. it had no evidence that they can protect the heart

C. the pills contain too little omega-3 to be helpful

D. one is likely to get too much omega-3 from the pills

29. The FDA allowed manufacturers of omega-3 pills and fish oils to advertise omega -3’ s benefits on condition that

A. their suggested dose is printed on the label

B. their suggested dose is within the safety limit

C. the fat’s potential side effects are mentioned

D. the products contain side effects are mentioned

30. The writer seems to suggest that

A. omega-3s can balance one’s diet

B. omega-3s can serve as a supplement

C. an unbalanced diet is made worse by omega-3s

D. a well-balanced diet contains enough omega-3s

Passage Three

Questions 31 to 35 are based on the following passage.

It was a terrible tragedy, six times more deadly than the Titanic ( 泰坦尼克号 ). When the German ship Wilhelm Gustloff was hit by torpedoes ( 鱼雷 ) fired from a Russian submarine ( 潜水艇 ) in the final winter of World War II, more than 10,000 people---mostly women, children and old people fleeing the final Red Army push into Germany—were packed aboard. An ice storm had turned the dicks into frozen sheets that sent hundreds of families sliding into sea as the ship listed and began to go down. Others desperately tried to put lifeboats down. Some who succeeded fought off those in the water who had the strength to try to get aboard. Most people froze immediately. “I’ll never forget the screams,” says Christa Nutzmann, 87, one of the 1,200 survivors. She recalls watching the ship, brightly lit, slipping into its dark grave—and rarely mentioned for more than half a century.

The long silence about the sinking of the Wilhelm Gustloff was probably unavoidable—and necessary. By unreservedly confessing their country’s horrible crimes Germans have managed to win acceptance abroadand make peace with their neighbors. Today’s unified