What is the topic of the news？A．Air pollution.B．Medicare in the U. S..C．The component of s

What is the main topic of the news item？A．Methane explosion in Turkey.B．Miscounting of the

What is the main topic of this news？A．How to ensure safe navigation at night.B．The possibl

What is the main topic of the conversation？A．The development of the automobile.B．Declining

What is the main topic of this news？A．U.S.security agencies" failure in communication.B．U.

What is the role of the 3rd paragraph in the development of the topic？A．Introducing the is

The main topic of the news item is______.A．Endeavour"s last trip to the universeB．the firs