文档介绍：Section I Use of English Directions:
Read the following passage. For each numbered blank there are four choices marked A, B, C and D. Choose the best one and mark your answers on ANSWER SHEET 1. (10 points)
The outbreak of swine flu that was first detected in Mexico was declared a global pandemic on June 11, 2009, in the first designation by the World Health Organization of a worldwide pandemic in 41 years.
The heightened alert came after an emergency meeting with flu experts in Geneva that convened after a sharp rise in cases in Australia, and rising numbers in Britain, Japan, Chile and elsewhere.
But the pandemic is "moderate" in severity, according to Margaret Chan, the organization's director general, with the overwhelming majority of patients experiencing only mild symptoms and a full recovery, often in the absence of any medical treatment.
The outbreak came to global notice in late April 2009, when Mexican authorities noticed an unusually large number of hospitalizations and deaths among healthy adults. As much of Mexico City shut down at the height of a panic, cases began to crop up in New York City, the southwestern United States and around the world.
In the United States, new cases seemed to fade as warmer weather arrived. But in late September 2009, officials reported there was significant flu activity in almost every state and that virtually all the samples tes