单选题
[填句补文]When do people decide whether or not they want to become friends？ During their first four minutes together， according to a book by Dr. Leonard Zunin. In his book， “Contact： The first four minutes，” he offers this advice to anyone interested in starting new friendships： ________. A lot of people's whole lives would change if they did just that.
A.That is not the time to complain about one's health or to mention faults one finds in other people.
B.Every time you meet someone in a social situation， give him your undivided attention for four minutes.
C.It is not the time to tell the whole truth about one's opinions and impressions.
D.He is eager to make friends with everyone.
正确答案：B
答案解析：空格前后句中出现了代词的呼应……this advice……that， 结合空格后句意（如果他们那样做的话，很多人的整个生活都会发生改变）判断that指代的内容是前句中提到的“这条建议”，所以判断空格处出现表意为“建议”的句子可能性最大，结合被选项的内容和用词判断B是答案。