单项选择题What is the main theme of the passage
单项选择题What does this refer to in the expression this appears less of a hazard
单项选择题According to the passage, once a minority owned business is established, self-help networks contribute which of the following to that business
单项选择题Why will Boeing not need a replica of the 777
单项选择题Which of the following can be inferred from the passage about the Irish building and loan associations mentioned in the last paragraph