Directions: Write an essay of about 400 words in English on the following topic. Write your essay on your ANSWER SHEET

Food Safety

单项选择题The researchers have discovered that the formation of habit can be _________.

问答题off

单项选择题How much percent of high school graduates were proficient in foreign languages forty years ago

单项选择题According to the passage, which of the following is TRUE

单项选择题According to the author, the department stores of the 19thcentury________.