【简答题】单词拼写。 1.I'm not too k ________ on jazz-on the contrary,I like rock'n'roll. 2.Do you own or r ________ your video? 3.He was e ________ chairman of the meeting. 4.You should be p ________ for appointmen...
【简答题】选词填空,并做适当的变形 leisure time spectator sport age group video leisure activity 1 I'm not good at playing football, but I like watching it. It is a great__________. 2 People in my fathe...
【简答题】Watch a video clip and fill in the missing words: Home at Harvard.mp4 Home at Harvard Congratulations on being accepted to Harvard. I'm Rakesh Khurana, I'm the Dean of the college. I know there must b...
【简答题】化学平衡研究的对象是( )反应,化学平衡状态是一个( )的平衡,达到平衡状态时,正逆反应仍在不断进行,正反应速率等于逆反应速率,但不等于( ).当外界条件如( )( )等变化时,则原平衡被破坏,在新的条件下会重新建立平衡。
【单选题】下面是某化学研究小组探究外界条件对化学反应速率和化学平衡的影响规律图象,其图象和实验结论表达正确的是 ( ) 注:①中的反应式为:A(g)+3B(g) 2C(g);②中的反应式为:A(g)+B(g) 2C(g); ③中的反应式为:A(g)+3B(g) 2C(g);④中的反应式为:A(g)+B(g) 2C(g)
A.
①是其它条件一定时,反应速率随温度变化的图象,正反应△H<0
B.
②是其它条件一定时,化学平衡常数随温度的变化图象,正反应△H<0
C.
③是在有无催化剂存在下建立的平衡过程图象,a是使用催化剂的曲线
D.
④是一定条件下,向含有一定量A的容器中逐渐加入B时的图象,压强p 1 >p 2
【简答题】完形填空。 I'm John. This is my room. The TV is 1 the table. The video cassettes 2 in the drawer. Where are 3 pencils? They 4 on the table. They are in my pencil case. 5 my pencil case? Oh. 6 in my backp...
【简答题】单句改错。 ( )1. I'm used to live in the country now. A B C D ( )2. The teacher told us that light traveled faster than sound. A B C D ( )3. They sa...