1. When did we first know why we look like other people in our family?
A. In 1860.
B. In 1953.
C. In 1961.
D. In 2000.
2. What does the underlined word "gene" mean?
A. The "map" of DNA.
B. A special language.
C. Small parts of DNA.
D. DNA.
3. What did the two scientists first discover in 1961?
A. The "map" of DNA.
B. A new illness.
C. The language of DNA.
D. A message of DNA.
4. What can we do if we understand some "words" of the language inside the body?
A. Make people get new jobs.
B. Make medicine for illnesses.
C. Make maps of human.
D. Make people less attractive.
5. What do people think about this work?
A. It can cause good or bad resutls.
B. It can cause only good results.
C. It can cause good results but won’t work.
D. It can cause only bad results.
A C D B A