问题 问答题

乐乐同学是一个热爱劳动、善于观察的学生,在星期天帮助妈妈擦洗玻璃时,发现厨房的钢窗比卧室的钢窗锈蚀严重。请回答:

(1)产生这一现象的原因。

(2)在不拆掉此钢窗的前提下,如何防止钢窗进一步锈蚀?

(3)金属资源储量有限且不能再生,为了保护金属资源,除防止金属的腐蚀外,你还有什么合理的建议(答一点即可)?

答案

(1)厨房中水蒸气的含量比卧室中水蒸气含量高;

(2)将铁锈除掉,在清洁和干燥的钢窗上刷上一层油漆;

(3)回收再利用。

填空题
阅读理解

       Rafting the GRAND CANYON Welcomes You!

If you are looking for an exciting, fun and challenging white water tour, Rafting(筏运) the GRAND CANYON is here to help you plan the right tour for you. Whether you want to travel for two days or ten, hike in or not, go on an oar(船桨) boat or motorboat, through Class 3 or 6 water, we will help you find the trip that meets your needs.

For those who will be vacationing in the off-season, a rafting trip on the Native American Red River is available or a one-day trip is available on the Colorado River from Diamond Creek to Pierce Ferry.

Most of the trips depart from Lees Ferry, Arizona. We offer partial trips which allow you to get on or off at Phantom Ranch located at the bottom of the Grand Canyon National Park South Rim. You can have a hike, and with proper planning the mule(骡子) ride up or down is also an option. Most trips occur between April and October.

Since all rafting on the Colorado requires a permit, planning and reserving your trip requires reservations well in advance. Please let us know when you would like to go and we will contact all the river concessionaires(特许权获得者) to help you find the best trip for you.

To talk to us or to make a reservation, call us toll free:

1-800-222-6966

or 702-655-6060

If you have any questions regarding a trip, please CLICK HERE to fill out our form. This will speed up the process of getting you accurate information regarding that trip.

If you would like to send us an email about something other than an upcoming trip you can contact us at info@raftingthegrandcanyon.com.

We look forward to helping you plan your trip!

(Please NO Travel Agents.)

小题1:If you want to enjoy rafting, you can travel        .

A.both in the off-season and the busy season

B.only in the off-season

C.only in the busy season

D.only between April and October小题2:All the following activities are recommended EXCEPT         .

A.hiking

B.swimming

C.rowing a boat

D.animal riding小题3:Which of the following is most likely to be a customer of Rafting the Grand Canyon?

A.Travel agents.

B.River concessionaires.

C.A couple who are planning their honeymoon.

D.An athlete who wants to have a rest after an injury.