封闭式基金与开放式基金主要有哪些区别（） A．期限不同 B．份额限制不同 C．交易场

That is _____________ book. [ ]

A. Amy

B. Amys

C. Amy's

如图甲、乙是电化学实验装置。

(1)若甲、乙两烧杯中均盛有NaCl溶液。

①甲中石墨棒上的电极反应式为_________________________；

②乙中总反应的离子方程式为________________________；

③将湿润的淀粉KI试纸放在乙烧杯上方，发现试纸先变蓝后褪色，这是因为过量的Cl₂氧化了生成的I₂。若反应中Cl₂和I₂的物质的量之比为5 ∶1，且生成两种酸，该反应的化学方程式为_________________。

(2)若甲、乙两烧杯中均盛有CuSO₄溶液。

①甲中铁棒上的电极反应式为______________________；

②如果起始时乙中盛有200 mL pH＝5的CuSO₄溶液(25℃)，一段时间后溶液的pH变为1，若要使溶液恢复到电解前的状态，可向溶液中加入________(填写物质的化学式)________g。

E

2010 Spring Vacation Program

Lexington Prep School’s (LPS)Spring Vacation Program offers students an opportunity to use their break time productively．

Students who plan ahead can take advantage of reduced rates：

*Spring Vacation：Friday 3／5／2010-Monday 3／29／2010

*Registration(报名)Deadline：2／15／2010

*Our Special Pricing offer ends after 2／1／2010

*If registered after 2／1／2010，$200／day for Basic Program

*ONLINE REGISTRATION (Click Here) *

Students will stay in our picturesque facility and choose from one of three following programs：

A．Basic Program: $120／day if registered before Feb．1，2010

Students in our Basic Program are provided with room，board and classroom space for

independent work．We also provide shuttle service to local sites including the local subway station．malls，and nearby movie theaters．Students may also choose to participate in outings to attractions such as the Boston Museum of Science，Salem Witch Museum，and Faneuil Hall Marketplace for all additional charge．

B．Balanced Program，$220 per day

students in our limited program participate in SSAT or SAT／English preparation classes during the morning session focusing on vocabulary and grammar, critical reading，and essay writing.

After lunch．students are free to work independently or to relax．

C．Intensive Program，$260 per day

Students in our intensive program are given a full day of SSAT or SAT／English preparation including  grammar,  vocabulary,  critical  reading，  writing  and  mathematics. The  intensive program is designed to achieve the greatest score increase in the shortest period of time.

For participants in all programs：

*Each student will have one roommate in a room equipped with a bathroom.

*Private classes are also available in：All AP Subjects，all SAT Ⅱ Subjects，school project work, school research paper assistance，art，music．

*Facilities include(a gym，art room，library，TOEFL certified computer lab，concert hall with

grand piano, movie room，and recreation room with karaoke and ping-pong table.

57．If students register for Basic Program before 2／1／2010，they Can save__________per day.

A．$80    8．$120    C．$220    D．$260

58．If choosing Balanced Program，students can do the following EXCEPT__________

A．share a double room(with a bathroom)with another student

B．take a full day of SSAT or SAT／English preparation classes

C．attend private classes such as school project work,art and music

D．have fun seeing a movie，singing karaoke or playing ping—pong

59．The purpose of Intensive Program is to help students_________

A．gain the highest score in the shortest time

B．1earn to get along with roommates

C．enjoy reduced price for the Spring Vacation Program

D．work independently on a school research paper

60．This passage may probably appear___________

A．in research report  B．in a textbook   C．at a website   D．in a guidebook

将5．6LCO₂气体缓慢通过一定量的Na₂O₂固体后，得到3.36L气体(气体体积均在标准状况下测定)，所得气体的质量为 [ ]

A．3.8g

B．4.8g

C．5.4g

D．6.6g

具有清热解毒、凉血功效的药有（）

A.大血藤

B.大青叶

C.板蓝根

D.青黛

E.野菊花