My classmate Jennifer and I graduated from an ordinary normal university last year. Like most of the students who had just stepped out of university, we had to 36 the first tough test
We are pleased with the fact that the people in the poor area are proud of what they ______ in the past 10 years. A. are achieving B. achieved C. have achieved
,
=l.
+
≤a+b+
=l,
)
≤l.
.
ab≤
(当且仅当a=b时取等号).
.