【简答题】众所周知,煤炭是不可再生能源,地球上储量有限.节约能源关系到子孙后代的生存.火力发电是利用煤炭燃烧来发电的,煤炭在燃烧时会释放大量二氧化碳、二氧化硫等有害气体,能形成酸雨和大气污染.会造成全球气候灾难性的变化.节约1kW?h电约少消耗0.4kg煤,约少排放0.5m 3 二氧化碳和30g二氧化硫.因此,节约用电具有重要的现实意义. (1)现居住在苏州的人口大约有1000多万,约有350万个家庭.假设...
【单选题】______are you eating? I'm eating ______ meat. A. B.C. Where,not D. 6. Is she ____ something? A. eat B. eating C. eatting D. eats 7. I can't catch up with the fashion,because the clothes style_______ a...
【单选题】将钢加热到适当温度,保温一定时间,然后( )的热处理工艺称为退火。
【简答题】选出句中错误并改正。 ( ) 1. I and Jack both come from America . ____________________ A B C D ( ) 2. This is Mary. He is English . ____________________ A B C D ( ) 3. L...
【简答题】用所给单词的正确形式填空。 1. The joke is _______ (fun). We all laugh. 2. Where is the _______ (happy)? It's in your own hands. 3. My mother was _______ (satisfy) with what I did. 4. Don't let him _______ (go) the...
【单选题】甲与乙订立合同,规定甲应于2018年8月1日交货,乙应于同年8月7日付款。7月底,甲发现乙财产状况恶化,无支付货款的能力,并有确切证据.遂提出终止合同,但乙未允。基于上述因素,甲于8月1日未按约定交货。甲是在行使( )。
【单选题】Where is Jack? I think he is still in ______ bed, but he might just be in ______bathroom.
【简答题】It is hard to... 做......很困难 (用该句型翻译下列句子) ______________________________ ( 为上学做准备有点困难。 )