具有氧化酶活性的是（）。 A.免疫球蛋白 B.肌红蛋白 C.O脂蛋白 D.铜兰蛋白

中国著名的制碱专家侯德榜发明了“联合制碱法”。侯德榜为纯碱、氮肥工业技术的发展作出了杰出的贡献。纯碱(化学式为Na₂CO₃)属于[ ]

A.氧化物

B.酸

C.碱

D.盐

一般资料：求助者，男性，27岁，北方某大学在读硕士研究生。 案例介绍：求助者将要硕士毕业，为继续考博士还是找工作而犹豫。现在高学历人才越来越多，硕士毕业不一定能找到一份如意的工作，所以想继续攻读博士学位。但如果再读三年博士，拿到学位就三十多岁了，于是也想毕业后先去工作、结婚。另外，女友毕业后回了南方的家乡，多次提出让他毕业后也到那里去。他很不适应南方的生活，为到底在哪里找工作发愁。相恋四年的女友向他提出最后通牒，如果他硕士毕业不去她的家乡工作就分手。一个多月来，难以入睡，觉得头晕头昏，食欲下降，人变得消瘦，内心非常焦虑，学习的效率也有所下降。 心理咨询师观察了解到的情况：求助者敏感内向，追求完美，学习努力，人际交往良好。

该求助者产生心理问题的主要原因包括（）。

A.追求完美 

B.如意的工作难找 

C.躯体病变 

D.不适应南方的生活

College is a fresh start, and a chance to make new friends. These friends may become your lifelong friends, or the person you want to spend the rest of your life with. Whether you are going to a nearby college or the university far away from home, you are likely to meet new people wherever you are. Here are some advice to help you make friends at college.

Clearly, your classmates are all possible friends! Get to class early on the first day, and if you get there early enough, you will be in the room, or waiting outside it, with one other person, or a small group. A good casual opener would be to ask if you’re in the right classroom, then introduce yourself, and explain that you’re new, and a freshman. Do this at all of your classes, and you will have a group of friends that you can make study groups with, take notes for you when you’re absent or sick.

If you live in a dormitory, your hall will most likely have many fun activities to take part in. Take advantage ofthem, and go to as many as you can. Knowing your friends living in the same hall will also come in convenience because they will be the ones hosting and inviting you to parties that you will be missing out. Joining as many organizations as possible will also help you make new friends quickly. Parties are there to help students form close relationship with each other. Doing a team sport is another great idea. The best part of joining an organization is that you’ll find people who share your interests, and with whom you’ll therefore have a lot to talk about.

小题1:Getting to class early will ___________.

A．give you more information about the teacher

B．let you concentrate more on your class

C．give you a good chance to make friends

D．leave a good impression on others小题2:According to the text, the friends you get to know in class may __________.

A．share your interests

B．invite you to parties

C．help you to become a good player

D．take notes for you小题3:What is the meaning of freshman in paragraph 2?

A．A classmate.

B．A student in the first year.

C．A girl student.

D．A new teacher.小题4:Which piece of advice is NOT given by the author?

A．Make friends with your classmates.

B．Take part in dorm activities.

C．Do the same team sports as your classmates.

D．Join as many organizations as possible.

我国开始实行以市场供求为基础、参考“一篮子”货币进行调节、有管理的浮动汇率制度的时间是( )。

A．1994年1月1日
B．1996年12月1日
C．1998年7月21日
D．2005年7月21日

骠马是比较常用的防除（）杂草的药剂。

A.禾本科

B.十字花科

C.阔叶