白鹤梁是一段长约1600米、平均宽约15米的石梁，位于重庆市涪陵区北面的长江中，多数

I started this QQ group named CZ (Chenzhou) English club two months ago. It has twenty-eight members now. It is an English chatting place. Now we need some more friends who are interested in chatting in English.

Please remember the rules for our group members.

★ Everyone in our group must speak in English with each other. Don't keep silent for ten days.

★ The main aim of this group is to improve our English.

★ Chatting in English doesn't mean we pay more attention to English. I think Chinese is my first language and it's the most important.

★Don't send advertisements or any pictures here.

If you don't follow the rules above, we will ask you to leave.

小题1:This QQ group is an English chatting place.

小题2:Everyone in this group must speak in Chinese with each other.

小题3:The main aim of this QQ group is to make friends.

小题4:The writer thinks English is more important than Chinese.

小题5:If you send advertisements or any pictures here, you will have to leave.

下列关于生物工程的叙述，正确的是[ ]

A．用DNA分子做探针进行基因治疗，其原理是DNA分子杂交

B．在谷氨酸生产中，当培养基中的碳源与氮源为4：1时，菌体大量繁殖而产生的谷氨酸少

C．单克隆抗体和单细胞蛋白均是从生物工程细胞中提取的蛋白质分子

D．人工诱导植物原生质体融合与人工诱导动物细胞融合的方法完全不同

治疗带下过少肝肾亏损证，应首选的方剂是（）

A.左归丸

B.右归丸

C.四物汤

D.小营煎

E.六味地黄丸

在会计法规规定的法律责任中，主要是（）。

A.行政法律责任

B.刑事法律责任

C.民事责任

D.经济责任

图中挖掘机挖土与人力挖土做功的时间相同，我们可以用比较做功多少的方法来比较他们做功的快慢．为了比较物体做功的快慢，还可以用另一种方法：做相同的功，比较______．为此物理学中引入新的物理量______．