What is the main purpose to the talk？
A．To test the students' ability to understand chemistry
B．To explain different kinds of chemical processes
C．To list the jobs available to chemistry graduates
D．To introduce the students to the study of chemistry

Which of the following can be inferred from the passage？
A．Greater percentage of women are advancing professionally in the US than previously.
B．Professional men refuse to accompany their female colleagues on business trips.
C．Each year there are more female tourists in the United States.
D．Business women become successful by showing a willingness to travel alone.

听力原文：Members of the I.M.F. approved reform. measures that aim to increase the voting power of countries with growing economies. As a first step, they agreed to increases in the voting rights for China, South Korea, Mexico and Turkey. These four countries were considered the least represented given the size of their economics.
Members of the I.M.F. approved reform. measures aiming at increasing the voting power of countries with growing economies. They first agreed to increases in the voting rights four countries, namely China, South Korea Peru and Turkey.
A．正确
B．错误

听力原文：To ease tensions, North Korea opened disarmament talks with the United States and four other nations three years ago. Last September, they released a joint statement. It said North Korea would end its nuclear arms program in exchange for economic aid and security guarantees.
Three years ago, North Korea opened disarmament talks with the other 5 countries to ease tension. Last September, they released a joint statement.
A．正确
B．错误

In this passage, what advice does the author have for married women？ __
A．Stay home and take care of their family.
B．Encourage their husband and kids to be happy and have fun while they are away.
C．Help their family learn to prepare food for themselves.
D．Have their whole family take cooking classes together.

In India, if you cannot use your right hand for the time being,______.
A．you can pass food with your left hand
B．you can pass food with the help of your left hand
C．you'd better not pass food
D．you'd better leave the table