由于（），国内航行船舶载重线标志中无冬季载重线。A．冬季风浪较小 B．南方冬季气温较

阅读理解。

    The Museum of Childhood is Australia's most comprehensive collection of childhood items including

toys , dolls , infant and school material .

   Housed in a modern facility , the displays reflect Australian childhood experience over time including

play , child rearing , orphanage childhood , and home , school , and war time experience .

   There are many hands -on exhibits and education sessions including the famous 'lesson' in the 1920s

One Teacher Bush Classroom .

   The Museum also hosts national touring exhibitions and conducts special activities on Sundays and

school holidays(ring for details ).

Open: Tuesday- Friday 10am - 4pm , Sunday 10am - 4:30 pm , or by arrangement .

Special activities on Sundays as advertise .

Closed: Public holidays ,16 December-18 January .

Location: Edith Cowan University campus , Bay Road , Claremont (take bus 208 and alight at the Bay

Road and Princess Road intersection . The Museum is 15 minutes' walk from Claremont train station )

Tel :(08) 9442 1373 ; Fax ; (08 ) 9442 1314

1．On        you can stay at the Museum until half past four .

A．Wednesday

B．Friday

C．Sunday

D．Monday  

2．If you want to attend a special activity , you'd better come on           .

A．Monday

B．Tuesday

C．Saturday

D．Sunday

3．When you come on December 20th , Friday ,you will find the Museum          .

A．closed

B．holding special activities

C．not closed until 4:00

D．not closed until 4:30

4．The main purpose of the Museum of Childhood is to            .

A．display toys , dolls , infant and school material

B．reflect Australian childhood experience over time

C．host national touring exhibition      

D．tell you the famous 'lesson' in the 1920s

荣宝斋原名______，光绪20年取______之意，更名为荣宝斋。P80

下列实验方案合理的是（    ）

A．制备乙炔：实验室不能用启普发生器来制取乙炔

B．制备乙酸乙酯：将乙醇和乙酸混合，再加入稀硫酸共热

C．制备一氯乙烷：将乙烷和氯气的混合气放在光照条件下反应

D．制备乙烯：实验室用无水乙醇和浓硫酸共热到170℃制取乙烯

请回答港务监督不予办理出口岸手续的情况？

双子叶植物根的初生构造中显著的特征是具有（）。

A.外韧维管束

B.辐射维管束

C.周木维管束

D.周韧维管束