1．The percentage (比例) of girls in engineering has increased substantially.
2．Older women look best in classically elegant (优雅的) styles.
3．Observance of the law is a matter of principle (原则) for us.
4．We can't forget that deep relationships wouldn't even exist if it weren't for casual (随意的) conversation.
5．He sacrificed (牺牲) his own schooling so that his brother could go to college for lack of money.
6．I am not so violently bent upon my own opinion as to reject (拒绝) any offer proposed by wise men.
7．It is obvious (明显的) that even if we can save much energy, we can only delay the energy crisis.
8．Employers usually decide within five minutes whether someone is suitable (适合的) for the job.
9．Rainfall has been evenly distributed (分布) this year and a good harvest can be expected.
10．At first he was opposed (反对的) to the scheme, but we managed to argue him round.
11．My elder brother wants to buy a portable (便携式的) computer, so that he can carry it around when he travels.
12．He never gave up his dream and eventually (最终) achieved his goal.
13．The only drawback (缺点) of the plan is that it costs too much.
14．A highly organized system of irrigation is typical (典型的) of Chinese agriculture.
15．They want to write literary books that are accessible (易理解的) to a general audience.
