《论语》载，孔子曾说：“中人以上，可以语上（深奥学问）也；中人以下，不可以语上也。”这表明他在教学方法上主张
— ____? —I live in a farmhouse with my family. A.Do you like living here? B.What kind of home do you live? C.Where do you like
Some people fear that ________ air pollution may bring about changes in _______ weather around the world.A. /; the B. the; / C. an; the D. the; a
在我国社会主义市场经济中，企业间的竞争越来越激烈，企业的兼并和破产现象也越来越多。企业间的兼并和企业破产：（ ） ①是价值规律作用
—Which________ will you enter for in the sports meeting? —I'm considering.It's hard to choose from. A．affairs B．events C．competitions
已知等差数列{an}的前三项为a,4,3a,前n项和为Sn,Sk=2 550. (1)求a及k的值;(2)求的值.
I don’t understand what the engineer means, but I’ve got ______ rough idea of _____ project plan. A. the; a B. 不填; the C. the; 不填 D. a; the
以下是大黄同学对化学实验现象观察的记录，其中错误的是 A．硫磺在氧气中燃烧产生蓝紫色火焰 B．鸡蛋清溶液中加入浓硝酸，微
