Croatia has closed seven of eight road border crossings with Serbia because of the arrival of over 11,000 migrants who avoided encounters with police to enter the country. This is a struggle to control thousands of migrants trying to get to northern Europe. The government in Croatia had earlier said it would not be able to take any more migrants crossing from Serbia. Croatia has now joined Hungary in closing its road borders with Serbia, cutting off the main land road from Northern Europe through to Greece and Turkey. The authorities in Croatia say they have no choice. More than ten thousand refugees have entered the country since Wednesday, the day after Hungary criminalized unofficial border crossings. Croatia has attempted to take the newcomers to shelters, but the overwhelming numbers mean that many people have to be left on the streets. The authorities in Slovenia say they have stopped a train carrying more than a hundred migrants at the Slovenian border town of Dobova.1.What is the purpose of Croatia to close border crossings?A) To save human and financial resources.B) To reduce the threat from criminals in Serbia.C) To keep refugees from coming in northern Europe.D) To join Hungary in keeping migrants out of the country.2.What has Croatia attempted to do?A) To take less migrants from the border town.B) To send some migrants back to Serbia.C) To help migrants and settle them down.D) To allow the train carrying more migrants.