[填空题]
Read the following passage and fill in each blank with one word. Choose the correct word in one of the following three ways: according to the context, by using the correct form of the given word, or by using the given letters of the word. Remember to write the answers on the answer sheet.

Scientists believe they have solved one of the enduring mysteries of the sexes--why men can drink more alcohol than women. Many believe that women ty {{U}} (66) {{/U}} get drunk more quickly than men, even when their smaller size is taken into account, and they are more likely to suffer liver damage from alcohol ab{{U}} (67) {{/U}}.
The researchers say the difference is all in the {{U}} (68) {{/U}}. They say that men make far {{U}} (69) {{/U}} (high) amounts of a protective stomach enzyme that break {{U}} (70) {{/U}} alcohol before it hits the blood stream. The result : they don’t get as tipsy as women on the same number of drinks.<