2013年重阳节（10月13日）起，厦门市户籍（）周岁的老年人也可以办E通卡免费乘坐

（）用于在黑暗、浓烟条件下观察火源及火势蔓延方向，寻找被困人员。

A、有毒气体探测仪

B、生命探测仪

C、热像仪

D、蛇眼可视仪

如图所示，用三条细线悬挂的金属圆环，金属环粗细均匀、单位长度的质量为2．5g，三条细线呈对称分布，稳定时金属环面水平，在金属环正下方放有一个圆柱形磁铁，磁铁的中轴线OO’垂直于金属环面且通过其圆心O，测得金属环所在处磁感应强度大小为0．5T，与竖直方向成30⁰角。现在要使金属环各部分所受安培力的合力竖直向上且恰好等于其自身的重力，则在金属环中通过的电流大小至少为（取g="1" 0m／s²）                                          

A．0．01 A        B．0．2 A、      C．0．05A         D．0．1A

跨度（）6m，且框构顶至轨底的高度（即填土高度）（）1m为框构桥，否则为（）。

Skinner Creek ESL Guest Ranch offers a unique outdoor adventure camp for international students.

Students who come to Skinner Creek have the opportunity to learn English in an environment entirely different from a regular school setting. English classes are designed to meet the academic and spoken levels of each student. All English classes will be taught by instructors qualified in teaching English as a second language. All levels of English are available.

After class, students can enjoy many outdoor activities in a controlled and safe environment. Experienced managers and camp teachers will prepare each activity to the level appropriate for each student.

Students’ safety is a priority for the staff of Skinner Creek ESL Guest Ranch. Students are monitored at all times and supervisors are in the cabins with the students at night. Staff members have St. John’s First Aid and Transportation and Wilderness First Aid. An emergency clinic is nearby and accessible 24 hours.

English Classes:

Class hours are from Monday to Friday, 9:00 am—2:00 pm with a one-hour break for lunch.

Students are challenged in reading, writing, grammar, vocabulary building and conversational English.

Fun After-class Activities:

Great after-class activities include: horseback riding lessons, hiking, baseball, volleyball, badminton, mountain hiking, bonfires and much more.

Time to watch videos and TV and play games.

Experience Canadian family life.

Weekends:

Special all-day and overnight weekend activities include: camping, days at the lake (fishing, swimming and boating) and more.

Travel Information:

Students will be picked up at Vancouver airport and dropped off again for their individual flights. Transportation to and from the ranch will be provided as well as overnight stays in Vancouver.

Please contact the ranch directly for prices: skinnercreek@telus. net.

小题1:If you attend Skinner Creek Summer Camp, you will___.

A．sometimes have English Classes outdoors.

B．learn how to deal with dangers in the wild.

C．enjoy different sports activities after class

D．experience the traditional farmer lifestyle.小题2:How many hours of English classes do students have every week in Skinner Creek?

A．35 hours

B．28 hours

C． 25 hours

D．20 hours小题3:How will most students travel to Skinner Creek if they want to attend the camp?

A．By air

B．By car

C．By boat

D．By train

大陆漂移假说的提出的时间？