--- Jim managed to get into his house without the key．_______？
--- I don't know. He might have asked someone for help．
A．What for B．So what C．Guess how D．Who knows
The ______ amount of money was not known though they knew it was large.
A．real B．exact C．possible D．great
--- When did you last hear _______ Jay?
--- He phoned me this morning, and we agreed ______ a time and place to meet.
A．of ; to B．about; with C．from; with D．from; on
Jack recommended me a few foreign movies, but _______ was to my taste.
A．all B．neither C．some D．none
Thank you for sending us ______ fresh vegetables of many kinds. You have done us ____ great service.
A．/；a B．the；a C．/；/ D．the；/
最近的一份调查表明中国青少年的体质明显下降，青少年的健康问题日益受到社会的关注。请根据下列提示，以“The health of Chinese youngsters—a big concern”为题，写一篇100词左右的英语短文。
1．现状：青少年体质明显下降，有许多诸如肥胖、近视等健康问题；
2．原因：作业负担过重，睡眠不足，缺乏锻炼；
3．建议：改革现行教育制度，减轻学生负担，使学生有更多睡眠和锻炼的时间。
参考词汇：肥胖 obesity 近视short-sightedness 改革 reform
The health of Chinese youngsters—a big concern
________________________________________
