王某为某大学教授，2月份为一企业做专题讲座两次，3月份继续该讲座两次，每次4000元

先天性夜盲的常见疾病中，不包括（）。

A.视网膜有髓神经纤维

B.周边视网膜病变

C.白点状视网膜变性

D.视网膜发育不良

E.视网膜色素变性

某旅行社4月份绢织广个共30人的旅行团赴海南旅游，向每人收取旅游费3000元，旅游期间由旅行社为每人支付住宿费1200元，餐费1000元，交通费350元，门票50元。旅游业适用营业税税率为5％。旅行社该项旅游业务应缴纳的营业税为()元。

A．2700

B．600

C．1200

D．4500

High school graduation is indeed important for the person concerned. It is usually marked by a party where friends and family present the person with gifts as a celebration. Below are some good choices for those who will go to college.

You can buy a folding bike. It is a good choice for a high school graduate going to college who may not have room to store a traditional bike. He or she will love moving around the school. It can be easily folded and carried, which would be great for those who often trip back home on weekends. You can also buy a Walkman. It is not expensive. The person can enjoy music while walking, exercising or studying. It can help improve one’s mood.

College is an important time for a person’s career. Many high school graduates know little about the fields they will enter. So why not buy the person a book on what to expect in college life? That way the person would be fully prepared for college. Also he or she can tell something about it to his or her classmates. It is a reality that knowledge is something that cannot be taken away. Healthy food is a major issue in college. Some students have to put up with the bad-taste food in the college dining hall. A refrigerator which can keep food fresh is an excellent choice.

In short, there are so many you can choose from as high school graduation gifts. So what gift are you planning to give to the bright young person?

小题1:Why is a folding bike a good gift?_______

A．Because it is convenient and takes up little space.

B．Because it can help students save more time.

C．Because it is environmentally friendly and cheap.

D．Because it is much lighter than traditional bikes.小题2:How many great choices are mentioned in the text?________

A．3.

B．4.

C．5.

D．6.小题3:Gifts for people who will go to college should be 　　　　.

A．useful

B．cheap

C．lovely

D．fashionable小题4:What’s the text mainly about?_________

A．How to celebrate high school graduation.

B．How to make college life easy.

C．What a good gift means to high school graduates.

D．What to buy for people who will go to college.

我国普遍采用的确定用电设备计算机负荷的方法，有需要系数法和二项式法。但我认为二项式法存在局限性，只有在以下哪些情况下比需要系数法更优越（）。

A.确定设备台数较少且容量差别悬殊的分支干线

B.确定设备台数较多且容量差别悬殊的分支干线

C.确定设备台数较多且容量无很大差别的分支干线

D.确定设备台数较少且容量无很大差别的分支干线

E.确定设备台数较多或容量无很大差别的分支干线