1．No one can enter wildlife reserve (保护区) unless permitted.
2．An effective (有效的) way to prevent the burnout of young athletes is to reduce their mental stress.
3．I can find the animal that gave fur (毛皮) to make this sweater.
4．What do the factory owners do to get maximized profits (利益)?
5．Soldiers have been sent to protect the crew against attack (袭击)．
6．There exist (存在) many factories along the river, some of which have done great harm to the environment.
7．In fact, it is parents' pressure (压力) that is making it hard for me to do well in school.
8．Finally, I persuaded him not to transport these goods (货物) by ship.
9．The poster (海报) is so attractive that everyone passing by it couldn't help looking at it.
10．Any student whose family is too poor to go to school can get help from the authority (官方)．
