A:今天的讲座,能够聆听诸位先贤的高论,茅塞顿开,获益匪浅。
B:拙作奉上,自己总觉得惶恐不安,望哂笑之余,不吝赐教。
C:令嫒这次在儿童画展上获奖,多亏您悉心指导,我们全家都很感谢您。
D:你的文稿,我已看了,对其中不妥当的几处,我斗胆加以斧正。
某太阳能热水器内装有100kg初温为25℃的水,经过一天的太阳照射,水温升高到 75℃,则水吸收的热量为____ J,这些热量相对于完全燃烧____ m3天然气所放出的热量;要产生同样多的热量,用“220V 2000W”的电热水器正常工作需要____ min的时间.(水的比热容为4.2×103J/(kg•℃)、天然气的热值为7.1×107J/m3)
阅读理解
Yesterday Peter felt very sorry because he forgot (忘记) to say “Happy Birthday” to his uncle . So he wrote a letter to his uncle : “My dear uncle, I'm very sorry because I forgot your birthday. But to teach me a lesson, you'd better (最好) forget my birthday on Tuesday, tomorrow.”