题目

小李是个高中生，在平时生活中发现，经常看到一些车祸的报告，人们研究发现其中一个重要的原因是，当对面的车使用远光灯是，会使人瞬间“失明”，使人看不到前方的情况，从而酿成车祸。小李想设计一款能预防远观灯的眼镜，解决此问题小李会受到哪些条件的限制（） ①时间② 知识和技能 ③ 人力，物力，财力 A . ①② B . ①③ C . ②③ D . ①②③The junior high school graduates have to take a P.E. test in many places around China. The full marks are usually 30 points and it counts for much in the senior high school entrance exam. 【小题1】.因为对青少年而言，保持健康是非常重要的。In Nanjing the test is held in April. Students have the test in their own schools. Each student is tested on three sports. They can choose long jump, basketball dribbling (运球) or volleyball. The pull-up is for boys and girls can choose the sit-up. Both boys and girls must skip（跳绳） in the test，【小题2】.所以，学生们需要花大量的时间练习跳绳。They have fun skipping.【小题3】.Most students find the test easy and more than 90％of them can get full marks. That’s because they have been training for it during the three whole years. Students in Junior Three usually do lots of practice in P.E. classes. 【小题4】 .The training makes the test easier than it seems to be.[来源:Z+xx+k.Com]Students in Nanjing don’t need to run a lot for the test, but students in Beijing must do lots of running for the test. Running is one of the sports in test. So in P.E. classes, they usually run a lot. Sometimes they have to run 3,000 meters in one class. Some students are tired of running,【小题5】.they don’t think running is the most necessary sport for teens. They should be allowed to choose their favorite sports, such as swimming or dancing. But most teachers and parents welcome the P.E. test. They say it helps students build up their health.