27. We are inhabitants of the earth only for a short time. We____________________________.
28. War is _________________________________.
29. To ___________ your memory, try to _________________________________.
30. The teacher tries to give a report to _________________________________.
Topic-related Paragraphs
1. Key Words: D.N.A.
Scientists say people and chimpanzees developed separately since they split_________________ about six million years ago. But studies have shown that chimpanzee genes _______________ _________________.
D.N.A. is made up of genes. Genes, like letters in words, carry a huge amount of information. These messages tell cells how to make all the _______________ for life.
2. Key Words: sub-prime mortgage crisis
American lawmakers and law enforcers are busy with _____________________________. Many of the recent problems were caused by sub-prime mortgages. These highly ______________ loans were marketed to risky buyers and then sold to _______________. But even homeowners with _______________ are having trouble with other new kinds of loans.
3. Key Words: child delivery
A new study in rural Nepal shows the value of washing hands with soap and water ________________________________. Researchers found that hand washing by birth attendants and mothers increased the chances that babies would ______________ their first month.
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