会议所需用品可以根据需要随时决定购买，无需开列清单。
参考答案：错
The person in charge of the meeting asked the people present to sit ______ together and listen _______.[ ]
A. closely; close
B. close; closely
C. close; close
D. closely; closely
目前四维成像技术主要应用于
A．心脏
B．产科
C．腹部
D．小器官
E．尖颅
