Lisa	Sasha	Olaf
Reading	too interesting	1．	2．
Essays	hand writing word limit	3．	Plagiarism
Lectures	4．	5．	x
Seminars	6．	7．	8．

A．All the passengers are supposed to go through security checks.
B．All the airport workers are supposed to go through security checks.
C．All the flight crews are supposed to go through security checks.
D．Not all the federal officials are, supposed to go through security checks.

A．Less than ten million square kilometers.
B．Twenty million square kilometers.
C．Mom than twenty million square kilometers.
D．30% of the world's land surface.